Digi International Annual Report 2010

FY2010 Annual Report · Digi International

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Stockholder and Investor Information

Stock Listing

Stock Listing
The Company’s Common Stock trades on The
NASDAQ Stock Market LLC under the symbol
“DGII.”

Since July 3, 2006 the Company’s Common Stock has
traded on the NASDAQ Global Select Market tier of
The NASDAQ Stock Market LLC and prior to that
time was traded on the NASDAQ National Market tier.

High and low sale prices for each quarter during the
years ended September 30, 2010 and 2009, as reported
on The NASDAQ Stock Market LLC, were as follows:

Stock Prices

2010 first
High $9.57
$6.99
Low

second
$ 12.32
$ 8.87

third
$ 11.48
$ 7.86

fourth
$ 9.55
$ 7.29

2009 first
second
High $11.10 $ 8.98
$ 6.88 $ 6.26
Low

third
$ 10.72
$ 6.40

fourth
$ 10.87
$ 8.11

Dividend Policy

The Company has never paid cash dividends on its
Common Stock. The Board of Directors presently
intends to retain all earnings for use in the Company’s
business and does not anticipate paying cash dividends
in the foreseeable future.

The Company does not have a Dividend Reinvestment
Plan or a Direct Stock Purchase Plan.

Stockholder Information

Transfer Agent and Registrar
Wells Fargo Bank of Minnesota, N.A.
Wells Fargo Shareowners Services
161 N. Concord Exchange Street
South St. Paul, MN 55075
651-450-4064
800-468-9716

Legal Counsel
Faegre & Benson LLP
2200 Wells Fargo Center
Minneapolis, MN 55402-3901

Independent Public Accountants
PricewaterhouseCoopers LLP
225 South Sixth Street, Suite 1400
Minneapolis, MN 55402

Annual Meeting
The Company’s Annual Meeting of Stockholders
will be held on Thursday, January 20, 2011, at 3:30
p.m., at the Marriott Southwest, 5801 Opus Parkway,
Minnetonka, Minnesota.

Investor Relations
A copy of the Company’s Form 10-K, filed with the
Securities and Exchange Commission, is available free
upon request. Contact:

Investor Relations Administrator
Digi International Inc.
11001 Bren Road East
Minnetonka, MN 55343
952-912-DIGI
ir@digi.com

To Our Stockholders,

Fiscal 2010 was a year of continued profitability and a return to top-line growth for Digi. Revenue for the year
was $182.5 million compared to $165.9 million in the prior fiscal year, an increase of 10%. Net income for the
year was $8.9 million, or $0.36 per diluted share, compared to net income of $4.1 million, or $0.16 per diluted
share, in the prior fiscal year.

Our progress in fiscal 2010 and goals for the future are best categorized in four main areas:

1. Revenue Growth, including International and Wireless
2. Gross Margin and Operational Improvements
3. Growth of Services, Solutions and iDigi Devices under Management
4. Growth of Targeted Vertical Markets

1. Revenue Growth, including International and Wireless
Revenue growth resumed this year as we emerged from the fiscal 2009 economic downturn. We implemented
structural changes, especially in Japan and Asia Pacific that created international growth momentum that we
expect to continue in fiscal 2011.

We generated record bookings in fiscal 2010 resulting from our prior year investments in wireless solutions.
Wireless product revenue for fiscal 2010 increased by $10.1 million, or 18.0% over fiscal 2009, and represented
$66.3 million, or 36.3% of total revenue. We expect our wireless revenue will exceed 40% of our total revenue in
fiscal 2011.

2. Gross Margin and Operational Improvements
We made operational changes that improved gross margin from 49.0% in fiscal 2009 to 50.5% in fiscal 2010. The
increase was primarily due to reduced costs resulting from our fiscal 2009 business restructuring and other cost
reduction initiatives. We use inventory turns, lead time, and on time shipments metrics to measure our operational
performance. We’ve engaged outside resources to help us improve supply chain management and apply lean
manufacturing principles to further strengthen the aforementioned metrics. We expect to improve gross margin in
fiscal 2011.

3. Growth of Services, Solutions and iDigi® Devices under Management
Digi has been transitioning from a point product company to providing wireless solutions. Our iDigi® M2M
network operating platform is key to this transition. The iDigi® platform allows for quick and easy connection of
remote assets to a customer’s business applications while simultaneously enabling easy provisioning, maintenance
and management of devices. As a cloud-based, on-demand model, customers pay only for services consumed,
conserving capital and requiring minimal infrastructure to operate. We intend to aggressively grow our iDigi®
devices under management in fiscal 2011, primarily through our industry-specific solutions. Digi Energy, Digi
Fleet, and Digi Tank are all seeing significant customer deployments in energy management, fleet management, and
remote tank monitoring, respectively.

4. Growth of Targeted Vertical Markets
One of our most important developments for the year was increasing momentum in our targeted vertical markets
and especially in Smart Energy:

Energy
A string of energy industry leaders and innovative start-ups have partnered with Digi around our Digi X-Grid™
solution. Digi X-Grid™ solutions utilize the “Extended Grid,” which enables real-time, IP-based monitoring and
control of home energy devices beyond the electric meter. Digi is partnering closely with Itron, Comverge, and
Cooper Power as well as startups EcoFactor and GroundedPower and several more partners not yet announced.
Some other notable energy related developments and product announcements include the following:

• Comverge announced an extension of their contract with TXU Energy to deploy their Demand Response

solution to 100,000 more houses. The vast majority of these deployments will be with the Digi gateway and
iDigi® platform.

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• Demonstrating the value of Digi solutions in alternative energy applications, Digi and SolarEdge
Technologies, Inc. announced collaboration on full connectivity solutions for photovoltaic (PV) systems,
including data harvesting from revenue-grade power meters, PV inverter mesh networking and future
interaction with the Smart Grid.

• Digi introduced the ConnectPort® X2 for Smart Energy gateway. It is the industry’s first gateway that

connects, controls, or gathers data from ZigBee® Smart Energy devices equally well before or with Smart

Meter deployments.

• Digi recently launched the Encoder-Receiver-Transmitter (ERT) to Ethernet gateway and ERT to ZigBee
bridge products targeting Smart Grid applications for Itron customers with existing ERT Meters. This is
significant in that it leverages the installed base of meters and provides an incremental migration path to the
Smart Grid, without immediately requiring a new Smart Meter.

• Digi introduced the ConnectPort® X2 with Wireless M-Bus gateway family targeting Smart Grid

applications in Europe.

Fleet Management
We also saw more traction in Fleet Management as our strategic relationship with Xata strengthened. We will be
providing an increasing portion of their fleet management communications solutions. Key fleet and asset tracking
product announcements included the following:

• Digi introduced the ConnectPort® X5 family of compact, ruggedized telematics devices. The product family
is the industry’s first family of telematics devices to incorporate cellular, satellite, global positioning system
(GPS), Wi-Fi and vehicle area network (VAN) wireless technology in one device.

• We introduced the ConnectPort® X3, a low-cost, programmable cellular gateway for monitoring and

tracking remote assets. Both the ConnectPort® X3 and ConnectPort® X5, as well as all other Digi gateways
are integrated with the iDigi® platform.

• We introduced the Digi m130™, an embedded module that allows OEMs to enable their products with
cellular (GSM/GPRS), GPS (global positioning system) and ORBCOMM satellite connectivity in a single
solution.

Medical and Tank Monitoring
Finally, in the Medical and Remote Tank Monitoring markets, we’ve had large customers commit to Digi wireless
products and/or solutions. In both markets we have individual customers that are expected to purchase in excess
of $5 million from Digi in fiscal 2011.

The momentum created by these alliances and new product introductions and our focus on our strategic metrics
has placed us in a strong position entering fiscal 2011. We expect continued strength driven primarily by large
customer opportunities for our wireless solutions in our key targeted verticals, including Smart Grid, Fleet
Management, Medical, and Tank Monitoring. We are tracking these opportunities closely and are effectively
ushering them through the sales cycle.

We expect that fiscal 2011 will be the first year in the company’s history in which revenue exceeds $200 million.
I am very pleased with the efforts and accomplishments of the Digi team. We continue to strengthen our
management team and recently announced the addition of Steve Snyder as Chief Financial Officer. Steve brings
significant financial, operational and international expertise which will aid us in attaining our goals described
earlier in this letter. I believe we are better positioned for growth today than at any time in the company’s recent
history. The Digi team shares my enthusiasm as we moved confidently forward into fiscal 2011.

Joseph T. Dunsmore
Chairman, President and Chief Executive Officer

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_________________________________________

FORM 10-K
_________________________________________

(X)

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended: September 30, 2010

( )

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF
1934

For the transition period from ____ to ____.

Commission file number: 1-34033
DIGI INTERNATIONAL INC.
(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of
incorporation or organization)

41-1532464
(I.R.S. Employer
Identification Number)

11001 Bren Road East

Minnetonka, Minnesota 55343

(Address of principal executive offices) (Zip Code)

(952) 912-3444

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Common Stock, par value $.01 per share

Name of each exchange on which registered
The NASDAQ Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  No 

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  No 

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months, and (2) has been subject to such filing requirements for the past 90 days.
Yes  No 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every
Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the
preceding 12 months (or for such shorter period that the registrant was required to submit and post such files.) Yes  No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not
be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III
of this Form 10-K or any amendment to this Form 10-K. 

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller
reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of
the Exchange Act.

Large accelerated filer  Accelerated filer  Non-accelerated filer  Smaller Reporting Company 

(Do not check if a smaller reporting company)
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes  No 

The aggregate market value of voting stock held by non-affiliates of the Registrant as of the last business day of the Registrant’s most
recently completed second fiscal quarter was $262,852,499 based on a closing price of $10.64 per common share as reported on the
NASDAQ Global Select Market (formerly the NASDAQ National Market).

Shares of common stock outstanding as of November 23, 2010: 25,107,340

DOCUMENTS INCORPORATED BY REFERENCE

INDEX

The following table shows, except as otherwise noted, the location of information required in this Form 10-K, in
our Annual Report to Stockholders for the year ended September 30, 2010 and Proxy Statement for our Annual
Meeting of Stockholders scheduled for January 20, 2011. All such information set forth below under the
heading “Page/Reference” is incorporated herein by reference, or included in this Form 10-K on the pages
indicated.

PART I.

ITEM IN FORM 10-K

PAGE/REFERENCE

ITEM 1.

Business

ITEM 1A.

Risk Factors

ITEM 1B.

Unresolved Staff Comments

ITEM 2.

Properties

ITEM 3.

Legal Proceedings

PART II.

ITEM 5.

Market for Registrant’s Common Equity,
Related Stockholder Matters and Issuer
Purchases of Equity Securities

ITEM 6.

Selected Financial Data

ITEM 7.

Management’s Discussion and
Analysis of Financial Condition and
Results of Operations 28

ITEM 7A.

Quantitative and Qualitative Disclosures
About Market Risk

ITEM 8.

Financial Statements and Supplementary Data

ITEM 9.

Changes in and Disagreements with Accountants
On Accounting and Financial Disclosure

ITEM 9A.

Controls and Procedures

ITEM 9B.

Other Information

PART III.

ITEM IN FORM 10-K

PAGE/REFERENCE

ITEM 10.

Directors, Executive Officers and
Corporate Governance

ITEM 11.

Executive Compensation

ITEM 12.

Security Ownership of Certain Beneficial
Owners and Management and
Related Stockholder Matters

ITEM 13.

Certain Relationships and Related
Transactions and Director Independence

ITEM 14.

Principal Accounting Fees and Services

PART IV.

ITEM 15.

Exhibits, Financial Statement Schedules

PART I

FORWARD-LOOKING STATEMENTS

This Annual Report contains certain statements that are “forward-looking statements” as that term is defined
under the Private Securities Litigation Reform Act of 1995, and within the meaning of Section 27A of the
Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended.

The words “believe,” “anticipate,” “intend,” “estimate,” “target,” “may,” “will,” “expect,” “plan,” “project,”
“should,” or “continue” or the negative thereof or other expressions, which are predictions of or indicate future
events and trends and which do not relate to historical matters, identify forward-looking statements. Such
statements are based on information available to us as of the time of such statements and relate to, among other
things, expectations of the business environment in which we operate, projections of future performance,
perceived opportunities in the market and statements regarding our mission and vision. Forward-looking
statements involve known and unknown risks, uncertainties and other factors, which may cause our actual
results, performance or achievements to differ materially from anticipated future results, performance or
achievements expressed or implied by such forward-looking statements. We undertake no obligation to
publicly update or revise any forward-looking statement, whether as a result of new information, future events
or otherwise.

Our future operating results and performance trends may be affected by a number of factors, including, without
limitation, those described in Item 1A, Risk Factors, of this Form 10-K. Those risk factors, and other risks,
uncertainties and assumptions identified from time to time in our filings with the Securities and Exchange
Commission, including without limitation, our quarterly reports on Form 10-Q and our registration statements,
could cause our actual future results to differ materially from those projected in the forward-looking statements
as a result of the factors set forth in our various filings with the Securities and Exchange Commission and of
changes in general economic conditions, changes in interest rates and/or exchange rates and changes in the
assumptions used in making such forward-looking statements.

ITEM 1. BUSINESS

The terms “we,” “our” or “us” mean Digi International Inc. and all of the subsidiaries included in the
consolidated financial statements unless the context indicates otherwise.

COMPANY OVERVIEW

Digi International Inc. was formed in 1985 as a Minnesota corporation and reorganized as a Delaware
corporation in 1989 in conjunction with its initial public offering. Our common stock is traded on the
NASDAQ Global Select Market under the symbol DGII. With our global headquarters in Minnetonka,
Minnesota, and regional sales offices throughout North America, Europe and Asia, our products are available
through approximately 280 distributors located in approximately 70 countries. We also have engineering
locations in North America, Europe and India.

Our first products (sold under the DigiBoard® brand) were box and board-level serial port adapters that were
used to directly connect multiple peripherals, such as standalone computer terminals, to personal computers or a
host computer system. During the 1990s, Ethernet became the connectivity infrastructure for businesses and
over time it has been extended into factories, retail stores, restaurants, hospitals and many other environments.
During the same period, the semiconductor industry was also in a phase of rapid advancement. Complete
systems were being built on a single integrated circuit (chip). As part of a box or board level product, these
chips could be used to build a network interface for virtually any device for which network connectivity was
required. Recognizing the developing opportunities for device connectivity, we implemented a strategy in early
2000 to leverage the brand strength that we had established with the DigiBoard product line by organically

ITEM 1. BUSINESS (CONTINUED)

COMPANY OVERVIEW (CONTINUED)

developing or acquiring next-generation connectivity products and technologies that would extend the value of
the Digi brand into an array of device networking applications.

During the course of the past several years, we augmented our strategy with an increased emphasis on
developing wireless device connectivity solutions. In fiscal 2007, we launched our “Drop-in Networking”
initiative which provides end-to-end wireless access to electronic devices in places where wires will not work or
cannot be used. Drop-in Networking enables our customers to differentiate their products, provide better
customer service and frequently create new revenue streams. Our Drop-in Networking initiative provides
opportunities for us in the next wave of Internet growth. The initial wave was focused on connecting people,
first with personal computers and then with cell phones, PDAs and other related consumer devices. This next
wave focuses on connecting devices and machines. We believe that the Internet will support billions of new
devices in the next several years. We are ideally positioned to take full advantage of the second wave of
Internet growth with our Drop-in Networking Solutions that will provide significant market expansion in what
is now being referred to in the market as wireless machine to machine (M2M) connectivity.

M2M communication works by connecting communication hardware to a physical asset so that information
about its status and performance can be sent to a computer system and used to automate a business process or a
human action so that a person does not have to do it manually. By incorporating products from both our
embedded and non-embedded categories, our Drop-In Networking Solutions are making it easy for customers to
effectively “drop-in” a wireless M2M solution.

In fiscal 2009, we expanded on our Drop-in Networking initiative and introduced the iDigi® M2M network
operating platform. This Platform as a Service (PaaS) quickly and easily connects remote assets to a customer’s
business applications. The iDigi® platform also includes a control center application (iDigi Manager Pro™)
which enables easy provisioning, maintenance and management of the devices themselves as well as the
associated connectivity. The iDigi® platform runs on a grid of Digi-managed servers. As an on-demand
model, customers pay only for services consumed, conserving capital and requiring minimal infrastructure to
operate.

With our breadth of products, services and management software, as well as partnerships with leading device
manufacturers and application providers, we are now able to offer complete Digi Solution bundles – end-to-end,
fully customizable, industry-specific solutions that can be deployed with unprecedented speed. Digi Energy,
Digi Tank and Digi Fleet, the first Digi solution offerings, provide scalable, real-time monitoring and
management capabilities that have previously not been available.

Digi Energy – Digi Energy was launched as the first Digi solution bundle, targeting the Smart Grid efforts of
energy services providers. Creating a Smart Grid using new levels of monitoring and control to improve the
efficiency, security and reliability of the grid is a major focus in the world today.

In 2010, we extended our Digi Energy offering and introduced Digi X-Grid™ solutions, which provide
connectivity, control and support of all devices in the “Extended Grid.” The Extended Grid comprises devices
that exist beyond the meter in homes and businesses. It is only by leveraging these devices and thereby
enabling end users of energy to be actively engaged with energy producers that we can recognize the full
benefits of the Smart Grid. We provide provisioning tools, Smart Energy profile certified products (e.g.,
gateways, modules), the iDigi® platform and other services; our partners provide devices such as meters and in-
home displays, plus application integration. Together with our partners, we are making the Extended Grid a
reality, with over 30,000 gateways deployed in Residential Energy Management solutions today and over
100,000 under contract.

ITEM 1. BUSINESS (CONTINUED)

COMPANY OVERVIEW (CONTINUED)

Digi Tank – Our second Digi solution bundle is optimized for remote tank monitoring of storage tanks
containing liquids, solids and gases. Tank monitoring can reduce supply chain costs and insure tank-stored
inputs to a production process are available and of necessary quality. Digi Tank solutions include our wired and
wireless communication gateways, ZigBee modules and ZigBee adapters; the iDigi® platform, which provides
management, messaging and storage services to connect remote assets and enterprise applications; iDigi®
Device Integration Application (iDigi® Dia) device connection software; a growing list of wireless sensor
partners; iDigi® application partners, with ready-to-implement tank management applications; and Digi
Professional Services for device and solution design, deployment planning, integration and optimization.

Digi Fleet – Digi Fleet is the third Digi solution bundle. Comprised of our rugged mobile gateways with
support for Wi-Fi, cellular, ZigBee and satellite technologies, as well as the iDigi® platform and Digi
Professional Services, Digi Fleet solutions provide tracking, monitoring and management of large numbers of
high-value mobile assets. These solutions improve efficiency, reduce costs and meet government regulations
for connecting and monitoring tractors, trailers and containers.

We continue to leverage a common core technology base to develop and provide innovative connectivity
solutions to our customers. Core technology is used across product lines to provide additional functionality for
customers, allowing them to get to market with network-enabled devices faster. We have positioned ourselves
in the growing market of integrated hardware and software connectivity solutions to network-enable the coming
generation of intelligent devices in business applications. Our Drop-in Networking products and iDigi® brand
are enabling us to pivot our business from point products to solutions. We have strategic goals for the next
three to five years to change our revenue mix to be 60% wireless, 60% international, and at least 15% services.
We believe we are making progress towards these goals by increasing our investment in wireless products,
expanding internationally, and providing full solutions which include product and services offerings to our
customers.

PRODUCTS

Our products are divided into two categories: embedded and non-embedded. An embedded product is
incorporated by a product developer into an electronic device (e.g., utility meter, environmental sensors, retail
scanner, and medical instruments) to provide processing power and wired or wireless network connectivity to
that device. Additional hardware and/or software development is required on the part of the customer when
using an embedded product as the product usually is an integrated internal part of the device.

A non-embedded product is connected externally to a device or larger system (e.g., retail checkout, building
access control panel, traffic controller) to provide network connectivity or port expansion. Non-embedded
products generally do not require additional hardware development and can often be used right out of the box,
although they do provide an environment for adding custom software as well. These products provide an
economical way to network-enable previously deployed devices, allowing companies to utilize the latest
technologies without the cost of replacing existing equipment.

Embedded Networking Products

Modules – Developing a device around a chip or microprocessor involves a high level of complexity. A
module is a group of components that are set up to work together, eliminating much of that complexity. An
embedded module may provide somewhat less flexibility than a chip, but is much easier to implement into a
product design. A number of these modules can be directly connected to iDigi®, enabling remote management
and remote application connectivity.

ITEM 1. BUSINESS (CONTINUED)

PRODUCTS (CONTINUED)

Our modules can be divided into two categories: processor modules and communications modules. Processor
modules provide customers with a networked platform for use as the main processor in an embedded system
and the flexibility to add in custom features and functionality, as this ensures a quick time to market
development cycle for a network-enabled device. These modules are targeted as the core processors for
products such as access control systems, Smart Energy devices, Point-of-Sale (POS) systems, Radio Frequency
ID (RFID) readers, medical devices and instrumentation and networked displays. Communication modules are
ideal for network-enabling and web-enabling a device. They enable customers who wish to easily
accommodate both wired and wireless functionality in one product design. These modules make it very easy to
add most any type of connectivity, especially wireless connectivity. Typically with a communication module,
there is another processor performing the central processing. Adding wired or wireless network communication
to a device allows companies to manage that device over a network or via the Internet.

Chips – A chip (or microprocessor) provides the “brains” and processing power of an intelligent electronic
device or communication sub-system. Some of our higher volume customers choose to purchase chips and
build their own products. Chips are low cost but require the highest level of development expertise. Building a
solution from the chip level offers a low cost of the end design, but the level of complexity in product
development can increase risk and prolong time to market.

Our chips are the building blocks for many of our embedded and non-embedded products. By using our own
microprocessors we can ensure complete hardware/software compatibility for product designs. In addition this
allows us to guarantee long-term availability to our module customers. This is a significant advantage since
many of these products are expected to be in use for five to ten years once they are developed.

Software and Development Tools – Coupled with the chips and modules are a variety of development tools
and associated software to make application development easy. We provide software and tools for a variety of
operating environments and developer skill sets. These include Linux® and Microsoft® Windows® Embedded
CE as well as our own Net+OS, Dynamic C and Python based iDigi® Dia.

Single Board Computers – Single-board computers (SBCs) are complete systems on a single circuit board.
They are essentially a programmable box product without the enclosure – everything is on the board and ready
to be embedded into a larger system. They offer the same benefits as the processor modules, but eliminate the
need for additional interface circuitry because they include all of the key device interface components on one
circuit board.

Satellite – Our acquisition of MobiApps Holdings Private Limited (MobiApps) in June 2009 added satellite
communication products that provide worldwide satellite data transmit/receive capabilities for customers
involved in satellite-based tracking and industrial remote communications. Operating over the ORBCOMM
low-earth orbit satellite network, these products can significantly improve asset utilization by allowing clients to
monitor, track and manage their fixed and mobile assets around the world.

Non-Embedded Networking Products

Cellular Routers – Cellular routers provide connectivity for devices over a cellular data network. They can be
used as a cost effective alternative to landlines for primary or backup connectivity for hard to reach sites and
devices. We introduced the first intelligent high-speed cellular router in 2005 to address the growing need for
customers to connect remote sites and devices. These products have been certified by the major wireless
providers in North America and abroad, including AT&T®, Verizon Wireless®, Sprint®, Bell Mobility and
Rogers. All of our cellular products include a unique remote management platform that provides secure

ITEM 1. BUSINESS (CONTINUED)

PRODUCTS (CONTINUED)

management of devices across remote networks. In addition, application connectivity, management and
customization is enabled via the iDigi® platform for many of these products.

Gateways – A gateway aggregates local wireless data traffic and transports it over a cellular or other Internet
Protocol (IP)-based network, usually back to a central application or database. Our gateway products, part of
our Drop-in Networking solution, enable devices or groups of devices to be networked in locations where there
is no existing network or where access to a network is prohibited. These gateways can work in conjunction
with our wireless adapters and wireless embedded modules to enable customers to monitor and manage remote
devices in a non-intrusive and economical way. All of our gateway products are linked with iDigi® for secure
management of devices across remote networks, application connectivity and customization.

Wireless Communication Adapters – Our wireless communication adapters are small box products that utilize
a variety of wireless protocols for PC-to-device or device-to-device connectivity, often in locations where
deploying a wired network is not possible either because of cost, disruption or impracticality. By supporting
ZigBee®, Wi-Fi® and proprietary RF technologies, we can meet most customer application requirements, such
as serial cable replacement, Ethernet cable replacement, mesh networking, low cost/low power remote
monitoring, simple I/O control functions, environmental sensors and long distance connectivity. In conjunction
with one of our gateways, wireless communication adapters plug into iDigi® for remote management,
application connectivity and customization.

Serial Servers – Serial Servers (also known as device servers and terminal servers) add wired or wireless
network connectivity to a serial device. They transfer data between a serial port and an Ethernet network,
turning a previously isolated device with a serial port into a fully collaborative network component. We believe
that serial servers will remain an important product category as Ethernet based serial connections continue to
extend beyond their current applications into many new markets such as building automation, healthcare,
process control, and secure console port management on servers, routers, switches and other network
equipment. Many of our serial servers can also leverage iDigi® for application connectivity, remote
management and customization.

Console Servers – Console servers, or console management servers, provide access to the serial ports of
network equipment such as servers, routers or switches. Our intelligent console servers enable customers to
access, monitor or manage their network devices across multiple sites, both remotely over the network or via
their console ports even during network outages. These console servers provide advanced auditing and logging
capabilities that complement regulatory compliance efforts such as the Sarbanes-Oxley Act of 2002 and Health
Insurance Portability and Accountability Act of 1996 (HIPAA).

USB Connected Products – The Universal Serial Bus (USB) is a “plug-and-play” interface between a
computer and peripheral devices. In recent years, many serial ports on PCs have been replaced with USB ports,
due in large part to the usability and cost effectiveness of USB devices. We have one of the most
comprehensive and advanced USB port expansion product lines in the industry. Our USB-to-serial converters
enable customers to expand a single USB port into multiple serial ports to connect legacy peripheral devices.
The product line also includes USB hubs that add additional USB or powered USB ports, which are often used
in retail environments, and a network-enabled hub that connects USB devices over an IP network, which is an
industry first.

Serial Cards – A serial card plugs into the expansion slot of a computer to provide serial ports for device
connectivity. We are a global leader in this category and offer one of the most extensive serial card product
families. Our products support a wide range of operating systems, port densities, bus types, expansion options

ITEM 1. BUSINESS (CONTINUED)

PRODUCTS (CONTINUED)

and applications. As Ethernet connections extend beyond current applications, the serial card products are
gradually transitioning to network-attached and/or USB-attached devices. We have strengthened our product
offering to meet customer needs and fully support this mature product line while working to seamlessly
transition customers to newer technologies.

SERVICES

We also provide a variety of services to complement our products. Our services are included under our
embedded product grouping as they are not material to our consolidated financial statements.

iDigi® – iDigi® is an M2M network operating platform, used by software developers and organizations
responsible for supporting the network. iDigi® is used to connect enterprise applications to remote devices.

Digi m-Trak™ – The Digi m-Trak™ mobile asset tracking solution provides reliable, cost-effective fleet
monitoring and management. Combining GPS technology and wireless communication with an easy-to-use
web-based management application, the Digi m-Trak™ system ensures constant, on-demand access to fleet
information at any time, from any place. Digi m-Trak™ is only available in India, and parts of the Middle East,
Africa, and Southeast Asia.

Engineering Design Services – Through our subsidiary, Spectrum Design Solutions, Inc. (Spectrum), we offer
engineering design services to customers that are challenged with their wireless development projects. Our
specialized engineers have extensive experience in wireless technologies such as Global System for Mobile
communication (GSM), Code Division Multiple Access (CDMA), Global Positioning System (GPS), Wi-Fi and
proprietary radio frequency (RF) as well as Application Specific Integrated Circuit (ASIC) design, Field
Programmable Gate Array (FPGA) integration, embedded software and complete turn-key product development
which allows them to address virtually any wireless development need.

APPLICATION MARKETS

We believe we are a worldwide leader in commercial grade device connectivity, through network-enabling
devices in stores, factories, office buildings, banks, gas stations, oil rigs, hospitals, and many other vertical
environments. We are heavily focused on four application markets and we offer solution bundles as described
above for energy, tank and fleet.

Smart Energy – Our products, including Digi X-Grid™ solutions, simplify and accelerate the integration of
energy management systems with remote energy assets. These energy management systems are necessary for
Smart Grid initiatives encompassing both energy distribution and energy consumption management. Migrating
to IP-based network communications can be a challenge for utility companies, due to compatibility issues
between field equipment and the applications used with them. Our products enable companies to network-
enable existing products in the field without replacing hardware or rewriting existing application software and
are used in Automated Meter Reading (AMR), Automated Meter Intelligence (AMI), Energy Management
Services, Distribution Automation and other smart energy applications.

Tank Monitoring/Management – Our wireless Tank Monitoring/Management solutions help companies more
efficiently integrate, manage and monitor remotely deployed tanks of liquids, solids and gases. We offer end-
to-end, fully customizable wireless hardware, a software platform and services that can be used to create and
deploy secure, highly scalable and flexible tank monitoring solutions with unprecedented speed.

ITEM 1. BUSINESS (CONTINUED)

APPLICATION MARKETS (CONTINUED)

Fleet Management – Some of our newest products have extended our network connectivity expertise into Fleet
Management. Using a combination of cellular, satellite, Wi-Fi and ZigBee wireless connectivity, these
solutions provide improved operating efficiency and asset management. We provide equipment and
applications for connecting and tracking commercial vehicles, primarily focused on long-haul trucking, but
extending to other areas of public and private fleets, including taxis, public transit, emergency service vehicles,
heavy equipment and others. Applications also include container/traffic tracking, stolen vehicle recovery, and
recording driver behavior metrics.

Medical/Healthcare – We provide a way to network-enable medical equipment and devices to receive, monitor
and access patient information quickly, easily, and accurately, utilizing the hospital’s existing Ethernet or
wireless network to improve patient care and reduce operating costs.

In addition, we have a long history of successful deployments in other application markets, including Remote
Device Management, Building Automation/Security, Traffic Management, Industrial Automation, Retail/Point-
of-Sale (POS), Data Center Management, Digital Signage, and Government.

ACQUISITIONS

We have made several acquisitions in the past five fiscal years that are consistent with our corporate strategy.

In July 2006, we acquired MaxStream®, Inc. (MaxStream), a leader in the wireless device networking
market. MaxStream supplies device manufacturers and integrators with reliable wireless modules and
box products that are easy to use and allow customers to wirelessly monitor and control electronic
devices. Typical applications include automated utility meter reading, oil and gas monitoring, remote
control and monitoring of commercial heating and air conditioning systems, vehicle information access
for fleet management, industrial controls, wireless sensors, and electronic signals. MaxStream was also
a pioneer in the field of ZigBee®/802.15.4 wireless communications. The MaxStream acquisition
significantly expanded our wireless offering both with embedded modules and non-embedded wireless
communications adapters. The products also play a key role in our Drop-in Networking initiative.
Effective October 1, 2007, MaxStream merged into Digi International Inc.

In April 2008, we acquired Sarian Systems, Ltd. (Sarian), a leader in the European wireless router
market. Sarian designs, develops and manufactures advanced wireless/cellular IP-based routing
equipment for mission critical applications. Sarian developed its own comprehensive IP-based
operating system and software and can offer customers technical excellence, flexibility and rapid
customization. Sarian has a strong customer base in ATM connectivity, retail and payment systems
connectivity, remote monitoring telemetry, lottery terminal connectivity and wireless backup of wired
broadband connections. Effective October 1, 2009, Sarian merged into Digi International (UK) Ltd.

In July 2008, we acquired Spectrum Design Solutions, Inc. (Spectrum), a leading design services
organization. Spectrum is a wholly owned subsidiary of Digi International Inc. Spectrum focuses on
solving a customer’s wireless development challenges. Spectrum’s engineers have extensive
experience in wireless technologies such as GSM, CDMA, GPS, Wi-Fi and proprietary RF as well as
ASIC design, FPGA integration, embedded software and complete turn-key product development which
allows them to address virtually any wireless development need.

ITEM 1. BUSINESS (CONTINUED)

ACQUISITIONS (CONTINUED)

In June 2009, we acquired substantially all the assets of MobiApps Holdings Private Limited
(MobiApps), a developer of M2M communications technology focusing on satellite, cellular and hybrid
satellite/cellular solutions. MobiApps has locations in India, Singapore and in the U.S. Pursuant to the
terms of the asset purchase agreements, Digi International acquired the U.S. assets located in Herndon,
Virginia. In addition, we established Digi Wireless Singapore Pte. Ltd. and Digi m2m Solutions India
Private Limited, which acquired the assets of MobiApps’ affiliate companies, located in Singapore and
India, respectively. MobiApps provides a new generation of products based on its own custom
designed and patented mixed signal ASIC, which dramatically reduces the complexity and improves
performance of satellite M2M system solutions. Satellite M2M applications include fleet management,
marine vessel tracking, container tracking, agricultural monitoring, energy management, and remote
field service applications. Satellite is especially suited to applications that cross country and continental
boundaries, providing connectivity in very remote locations, and providing mission critical wireless
backup solutions when cellular coverage is insufficient. MobiApps also has cellular and hybrid
cellular/satellite products packaged with various asset tracking management services, including vehicle
tracking, taxi dispatch and employee tracking, focused on markets in India and Southeast Asia.

Our products are sold under the Digi, Rabbit, iDigi®, Digi m-Trak™ and Spectrum brands. We believe the
Digi and Rabbit brands have established strong identities with our targeted customer base and we believe our
customers associate the Digi brand with “reliability” and the Rabbit brand with “ease of integration.” Many of
our customers choose us because they are building a very complex system solution and they want the highest
level in product reliability. In the core module and semiconductor application environments, ease of integration
is a powerful brand identity.

DISTRIBUTION AND PARTNERSHIPS

We sell our products through a global network of distributors, systems integrators, value added resellers
(VARs) and to original equipment manufacturers (OEMs).

Our larger distributors include Tech Data Corporation, Arrow Electronics, Inc./NuHorizons, Ingram Micro,
Synnex, Future Electronics, Miel, Atlantik Elektronik GmbH, B&B Electronics Manufacturing and Express
Systems & Peripherals. We also maintain relationships with many other distributors in the U.S., Canada,
Europe, Asia and Latin America. Additionally, we maintain strong relationships with catalog distributors
CDW, Insight, Digi-Key and Mouser Electronics.

We maintain strategic alliances with other industry leaders to develop and market technology solutions. These
include most major communications hardware and software vendors, operating system suppliers, computer
hardware manufacturers, cellular carriers and Smart Grid vendors. Key partners include: Microsoft, VMware,
Hewlett Packard, IBM, Dell, Toshiba, Atmel, Ember, Freescale, Qualcomm, Sierra Wireless, Ericsson, Itron,
AT&T, Sprint, Verizon, Bell Mobility, Rogers and several other cellular carriers worldwide. Furthermore, we
maintain a worldwide network of authorized developers that extends our reach into certain other technology
applications and geographical regions. With our MobiApps acquisition, we are now partnering with
ORBCOMM Inc. MobiApps’ satellite communication products utilize ORBCOMM Inc.’s low-earth orbit
(LEO) satellite network to monitor, track and manage customers’ fixed and mobile assets around the world.

Our customer base includes many of the world’s largest companies. We have strategic sales relationships with
leading vendors, allowing them to ship our products and services as component parts of their overall solutions.
These vendors include IBM, Comverge, Xata, Itron and Gilbarco, among others. Many of the world’s leading

ITEM 1. BUSINESS (CONTINUED)

DISTRIBUTION AND PARTNERSHIPS (CONTINUED)

telecommunications companies and Internet service providers also rely on our products, including Alcatel-
Lucent, AT&T, Sprint, Verizon and Siemens.

No customer comprised more than 10% of our net sales for the years ended September 30, 2010, 2009 and
2008.

We compete in the communications technology industry, which is characterized by rapid technological
advances and evolving industry standards. The market can be significantly affected by new product
introductions and marketing activities of industry participants. We compete for customers on the basis of
existing and planned product features, service capabilities, company reputation, brand recognition, technical
support, relationships with partners, quality and reliability, product development capabilities, price and
availability. While we have no competitors that carry a comparable range of products, we do have various
competitors based on specific products.

We are a leader in device networking for business, developing reliable products and technologies to connect and
securely manage local or remote electronic devices over the network, via the Internet, or via satellite. Our
enterprise solutions include embedded or non-embedded products or combinations of these products.

OPERATIONS

Our operations are conducted through a combination of internal manufacturing and external subcontractors
specializing in various parts of the manufacturing process. We rely on third party foundries for our
semiconductor devices (ASICs). This approach is beneficial because it allows us to reduce our fixed costs,
maintain production flexibility and optimize our profits.

Our products are manufactured to our designs with standard and semi-custom components. Most of these
components are available from multiple vendors. We have several single-sourced supplier relationships, either
because alternative sources are not available or because the relationship is advantageous to us. If these
suppliers are unable to provide a timely and reliable supply of components, we could experience manufacturing
delays that could adversely affect our consolidated results of operations.

SEASONALITY

In general, our business is not considered to be highly seasonal, although our first fiscal quarter revenue is often
less than other quarters due to holidays and fewer shipping days.

WORKING CAPITAL

We fund our business operations through a combination of cash and cash equivalents, marketable securities and
cash generated from operations. We believe that these current financial resources, cash generated from
operations, and our capacity for debt and/or equity financing will be sufficient to fund our business operations
for the next twelve months and beyond.

RESEARCH AND PATENTS

During fiscal years 2010, 2009 and 2008, our research and development expenditures were $27.8 million,
$26.4 million and $27.1 million, respectively. From time to time, we have customers that pay for us to develop
highly customizable products and we charge them fair market value for the services performed. Due to rapidly

ITEM 1. BUSINESS (CONTINUED)

RESEARCH AND PATENTS (CONTINUED)

changing technology in the communications technology industry, we believe that our success depends primarily
upon the product development skills of our personnel, and the ability to integrate acquired technologies with
organically developed technologies. We have incurred in-process research and development charges in
connection with our past acquisitions, which were expensed upon consummation of the acquisitions. Effective
October 1, 2009 in-process research and development costs are capitalized according to new authoritative
guidance issued by the Financial Accounting Standards Board (FASB) related to business combinations. Such
acquired in-process research and development charges will be disclosed separately and will be incremental to
the research and development expenditures disclosed above. We have not yet incurred any capitalized in-
process research and development.

Our proprietary rights and technology are protected by a combination of copyrights, trademarks, trade secrets
and patents. We have established common law and registered trademark rights on a family of marks for a
number of our products. Our patents are applicable to specific technologies and currently are valid for varying
periods of time based on the date of patent application or patent grant in the U.S. and the legal term of patents in
the various foreign countries where patent protection is obtained. We believe our intellectual property has
significant value and is an important factor in the marketing of our company and products.

BACKLOG

Backlog as of September 30, 2010 and 2009 was $26.8 million and $13.6 million, respectively. Most of the
backlog at September 30, 2010 is expected to be shipped in fiscal 2011. Our backlog increase as of September
30, 2010 as compared to September 30, 2009 is primarily due to an improvement in domestic economic
conditions and an increase in wireless customer orders. Backlog as of any particular date is not necessarily
indicative of our future sales trends.

EMPLOYEES

We had 648 employees on September 30, 2010.

GEOGRAPHIC AREAS

Our customers are located throughout North America, Europe, Middle East & Africa (EMEA), Asia and Latin
America. We are exposed to foreign currency risk associated with certain sales transactions being denominated
in Euros, British Pounds and Japanese Yen and foreign currency translation risk as the financial position and
operating results of our foreign subsidiaries are translated into U.S. Dollars for consolidation. We have not
implemented a formal hedging strategy to reduce foreign currency risk.

During 2010, we had approximately $75.2 million of net sales related to foreign customers including export
sales, of which $27.6 million was denominated in foreign currency, predominantly the Euro and British Pound.
During 2009 and 2008, we had approximately $75.2 million and $76.1 million, respectively, of net sales to
foreign customers including export sales, of which $33.4 million and $45.7 million, respectively, were
denominated in foreign currency, predominantly the Euro and British Pound in fiscal 2009 and predominantly
the Euro in fiscal 2008. In future periods, a significant portion of sales will continue to be made in Euros and
British Pounds. Financial information about geographic areas appears in Note 4 to our Consolidated Financial
Statements in this Form 10-K.

ITEM 1. BUSINESS (CONTINUED)

DIGI INTERNATIONAL WEBSITE

Our Annual Reports on Form 10-K, Proxy Statements, Quarterly Reports on Form 10-Q and Current Reports on
Form 8-K, and any amendments to these reports filed or furnished pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934 are available through our website (www.digi.com) under the “About us –
Investor Relations” caption or by writing to us. This information is available free of charge as soon as
reasonably practicable after we electronically file such material with the Securities and Exchange Commission.
These reports can also be accessed via the SEC website, www.sec.gov, or via the SEC’s Public Reference
Room located at 100 F Street, N.E., Washington, D.C. 20549. Information concerning the operation of the
SEC’s Public Reference Room can be obtained by calling 1-800-SEC-0330.

We are not including the information on our website as part of, or incorporating it by reference into, our Form
10-K.

ITEM 1A. RISK FACTORS

Multiple risk factors exist which could have a material effect on our operations, results of operations,
profitability, financial position, liquidity, capital resources and common stock.

Risks Relating to Our Business

Our dependence on new product development and the rapid technological change that characterizes our
industry makes us susceptible to loss of market share resulting from competitors’ product introductions and
similar risks.

The communications technology industry is characterized by rapidly changing technologies, evolving industry
standards, frequent new product introductions, short product life cycles and rapidly changing customer
requirements. The introduction of products embodying new technologies and the emergence of new industry
standards can render existing products obsolete and unmarketable. Our future success will depend on our
ability to enhance our existing products, to introduce new products to meet changing customer requirements and
emerging technologies, and to demonstrate the performance advantages and cost-effectiveness of our products
over competing products. Failure by us to modify our products to support new alternative technologies or
failure to achieve widespread customer acceptance of such modified products could cause us to lose market
share and cause our revenues to decline.

We may experience delays in developing and marketing product enhancements or new products that respond to
technological change, evolving industry standards and changing customer requirements. There can be no
assurance that we will not experience difficulties that could delay or prevent the successful development,
introduction, and marketing of these products or product enhancements, or that our new products and product
enhancements will adequately meet the requirements of the marketplace and achieve any significant or
sustainable degree of market acceptance in existing or additional markets. In addition, the future introductions
or announcements of products by us or one of our competitors embodying new technologies or changes in
industry standards or customer requirements could render our then-existing products obsolete or unmarketable.
There can be no assurance that the introduction or announcement of new product offerings by us or one or more
of our competitors will not cause customers to defer their purchase of our existing products, which could cause
our revenues to decline.

ITEM 1A. RISK FACTORS (CONTINUED)

We intend to continue to devote significant resources to our research and development, which, if not
successful, could cause a decline in our revenues and harm our business.

We intend to continue to devote significant resources to research and development in the coming years to
enhance and develop additional products. For the fiscal years ended 2010, 2009 and 2008, our research and
development expenses comprised 15.2%, 15.9% and 14.6%, respectively, of our net sales. If we are unable to
develop new products as a result of our research and development efforts, or if the products we develop are not
successful, our business could be harmed. Even if we develop new products that are accepted by our target
markets, the net revenues from these products may not be sufficient to justify our investment in research and
development.

Many of our products have been developed through a combination of internally developed technologies and
acquired technologies. Our ability to continue to develop new products is partially dependent on finding and
acquiring new technologies in the marketplace. Even if we identify new technologies that we believe would be
complementary to our internally developed technologies, we may not be successful in acquiring those
technologies or we may not be able to acquire the technologies at a price that is acceptable to us.

A substantial portion of our recent development efforts have been directed toward the development of new
products targeted to manufacturers of intelligent, network-enabled devices and other embedded systems in
various markets, including markets in which networking solutions for embedded systems have not historically
been sold, such as markets for industrial automation equipment, security equipment and medical equipment.
Our financial performance is dependent upon the development of the intelligent device markets that we are
targeting, the increasing adoption of wireless technologies by these markets and our ability to successfully
compete and sell our products to manufacturers of these intelligent devices.

Certain of our products are sold into mature markets, which could limit our ability to continue to generate
revenue from these products.

Certain of our products provide asynchronous and synchronous data transmissions via add-on cards. The
market for add-on asynchronous and synchronous data communications cards is mature. As the overall market
for these products decreases due to the adoption of new technologies, we expect that our revenues from these
products will continue to decline. As a result, our future prospects depend in part on our ability to acquire or
develop and successfully market additional products that address growth markets.

Our failure to effectively manage product transitions could have a material adverse effect on our revenues
and profitability.

From time to time, we or our competitors may announce new products, capabilities, or technologies that may
replace or shorten the life cycles of our existing products. Announcements of currently planned or other new
products may cause customers to defer or stop purchasing our products until new products become available.
Furthermore, the introduction of new or enhanced products requires us to manage the transition from older
product inventories and ensure that adequate supplies of new products can be delivered to meet customer
demand. Our failure to effectively manage transitions from older products could result in inventory
obsolescence and have a material adverse effect on our revenues and profitability.

ITEM 1A. RISK FACTORS (CONTINUED)

Our failure to compete successfully in our highly competitive market could result in reduced prices and loss
of market share.

The market in which we operate is characterized by rapid technological advances and evolving industry
standards. The market can be significantly affected by new product introductions and marketing activities of
industry participants. We compete for customers on the basis of existing and planned product features,
company reputation, brand recognition, technical support, relationships with partners, quality and reliability,
product development capabilities, price, and availability. Certain of our competitors and potential competitors
may have greater financial, technological, manufacturing, marketing, and personnel resources than us. Present
and future competitors may be able to identify new markets and develop products more quickly, which are
superior to those developed by us. They may also adapt new technologies faster, devote greater resources to
research and development, promote products more aggressively, and price products more competitively than us.
There are no assurances that competition will not intensify or that we will be able to compete effectively in the
markets in which we compete.

Our inability to obtain the appropriate telecommunications or satellite carrier certifications or approvals
from other governmental regulatory bodies could impede our ability to grow revenues in our wireless
products.

The sale of our wireless products in certain geographical markets is sometimes dependent on the ability to gain
telecommunications or satellite carrier certifications and/or approvals by certain governmental bodies. Failure
to obtain these approvals, or delays in receiving the approvals, could impact our ability to enter our targeted
markets or to compete effectively or at all in these markets and could have an adverse impact on our revenues.

Our entry into a services and solutions model, using cloud-based services, presents execution and competitive
risks.

We are deploying a services and solutions model using our own internally developed hosted services and cloud-
based platform, software, and supporting products. We are employing significant human and financial
resources to develop and deploy this cloud-based platform and strategies. While we believe our wireless,
device networking and connectivity expertise, investments in infrastructure, and our innovative environment
provide us with a strong foundation to compete, it is uncertain whether our strategies will attract the users or
generate the revenue required to be successful. Whether we are successful in this new business model depends
on our execution in a number of areas, including:

our ability to quickly and effectively put in place the infrastructure to deploy our solution;
competing effectively in our targeted application markets, including energy, tank monitoring, fleet

management and medical; and

deploying complete end-to-end solutions that accelerate our customers’ time to market.

We are dependent on wireless communication networks owned and controlled by others.

Our revenues could decline if we are unable to deliver continued access to satellite and digital cellular wireless
carriers that we depend on to provide sufficient network capacity, reliability and security to our customers. Our
financial condition could be impacted if our wireless carriers were to increase the prices of their services, or to
suffer operational or technical failures.

ITEM 1A. RISK FACTORS (CONTINUED)

The cyclicality of the semiconductor industry may result in substantial period-to-period fluctuations in
operating results.

Our semiconductor products provide networking capabilities for intelligent, network-enabled devices and other
embedded systems. The semiconductor industry is highly cyclical and subject to rapid technological change
and has been subject to significant economic downturns at various times, characterized by diminished product
demand, accelerated erosion of average selling prices and production overcapacity. The semiconductor industry
also periodically experiences increased demand and production capacity constraints. As a result, we may
experience substantial period-to-period fluctuations in operating results due to general semiconductor industry
conditions.

Loss of one or more of our large customers could have an adverse effect on our revenues.

Our sales are primarily made on the basis of purchase orders rather than under long-term agreements, and
therefore, any customer could cease purchasing our products at any time without penalty. The decision of any
large customer, including our distributors, to cease using our products or a material decline in the number of
units purchased by such a customer could have a material adverse effect on our revenues.

The long and variable sales cycle for certain of our products makes it more difficult for us to predict our
operating results and manage our business.

The sale of our products typically involves a significant technical evaluation and commitment of capital and
other resources by potential customers and end users, as well as delays frequently associated with end users’
internal procedures to deploy new technologies within their products and to test and accept new technologies.
For these and other reasons, the sales cycle associated with certain of our products is typically lengthy and is
subject to a number of significant risks, including end users’ internal purchasing reviews, that are beyond our
control. Because of the lengthy sales cycle and the large size of certain customer orders, if orders forecasted for
a specific customer are not realized or delayed, our operating results could be materially adversely affected.

We depend on manufacturing relationships and on limited-source suppliers, and any disruptions in these
relationships may cause damage to our customer relationships.

We procure all parts and certain services involved in the production of our products and subcontract most of our
product manufacturing to outside firms that specialize in such services. Although most of the components of
our products are available from multiple vendors, we have several single-source supplier relationships, either
because alternative sources are not available or because the relationship is advantageous to us. There can be no
assurance that our suppliers will be able to meet our future requirements for products and components in a
timely fashion. In addition, the availability of many of these components to us is dependent in part on our
ability to provide our suppliers with accurate forecasts of our future requirements. Delays or lost sales could be
caused by other factors beyond our control, including late deliveries by vendors of components. If we are
required to identify alternative suppliers for any of our required components, qualification and pre-production
periods could be lengthy and may cause an increase in component costs and delays in providing products to
customers. Any extended interruption in the supply of any of the key components currently obtained from
limited sources could disrupt our operations and have a material adverse effect on our customer relationships
and profitability.

ITEM 1A. RISK FACTORS (CONTINUED)

Our use of suppliers in Southeast Asia involves risks that could negatively impact us.

We purchase printed circuit boards from suppliers in Southeast Asia. Product delivery times may be extended
due to the distances involved, requiring more lead time in ordering. In addition, ocean freight delays may occur
as a result of labor problems, weather delays or expediting and customs issues. Any extended delay in receipt
of the component parts could eliminate anticipated cost savings and have a material adverse effect on our
customer relationships and profitability.

Our ability to compete could be jeopardized if we are unable to protect our intellectual property rights.

Our ability to compete depends in part on our proprietary rights and technology. Our proprietary rights and
technology are protected by a combination of copyrights, trademarks, trade secrets and patents.

We enter into confidentiality agreements with all employees, and sometimes with our customers and potential
customers, and limit access to the distribution of our proprietary information. There can be no assurance that
the steps taken by us in this regard will be adequate to prevent the misappropriation of our technology. Our
pending patent applications may be denied and any patents, once issued, may be circumvented by our
competitors. Furthermore, there can be no assurance that others will not develop technologies that are superior
to our technologies. Despite our efforts to protect our proprietary rights, unauthorized parties may attempt to
copy aspects of our products or to obtain and use information that we regard as proprietary. In addition, the
laws of some foreign countries do not protect our proprietary rights as fully as do the laws of the United States.
There can be no assurance that our means of protecting our proprietary rights in the United States or abroad will
be adequate or that competing companies will not independently develop similar technology. Our failure to
adequately protect our proprietary rights could have a material adverse effect on our competitive position and
result in loss of revenue.

From time to time, we are subject to claims and litigation regarding intellectual property rights or other
claims, which could seriously harm us and require us to incur significant costs.

The communications technology industry is characterized by frequent litigation regarding patent and other
intellectual property rights. From time to time, we receive notification of a third-party claim that our products
infringe other intellectual property rights. Any litigation to determine the validity of third-party infringement
claims, whether or not determined in our favor or settled by us, may be costly and divert the efforts and
attention of our management and technical personnel from productive tasks, which could have a material
adverse effect on our ability to operate our business and service the needs of our customers. There can be no
assurance that any infringement claims by third parties, if proven to have merit, will not materially adversely
affect our business or financial condition. In the event of an adverse ruling in any such matter, we may be
required to pay substantial damages, cease the manufacture, use and sale of infringing products, discontinue the
use of certain processes or be required to obtain a license under the intellectual property rights of the third party
claiming infringement. There can be no assurance that a license would be available on reasonable terms or at
all. Any limitations on our ability to market our products, or delays and costs associated with redesigning our
products or payments of license fees to third parties, or any failure by us to develop or license a substitute
technology on commercially reasonable terms could have a material adverse effect on our business and
financial condition.

ITEM 1A. RISK FACTORS (CONTINUED)

We face risks associated with our international operations and expansion that could impair our ability to
grow our revenues abroad.

We believe that our future growth is dependent in part upon our ability to increase sales in international
markets. These sales are subject to a variety of risks, including fluctuations in currency exchange rates, tariffs,
import restrictions and other trade barriers, unexpected changes in regulatory requirements, longer accounts
receivable payment cycles, potentially adverse tax consequences, and export license requirements. In addition,
we are subject to the risks inherent in conducting business internationally, including political and economic
instability and unexpected changes in diplomatic and trade relationships. There can be no assurance that one or
more of these factors will not have a material adverse effect on our business strategy and financial condition.

The loss of key personnel could prevent us from executing our business strategy.

Our business and prospects depend to a significant degree upon the continuing contributions of our executive
officers and our key technical personnel. Competition for such personnel is intense, and there can be no
assurance that we will be successful in attracting and retaining qualified personnel. Failure to attract and retain
key personnel could result in our failure to execute our business strategy.

Any acquisitions we have made or will make could disrupt our business and seriously harm our financial
condition.

We will continue to consider acquisitions of complementary businesses, products or technologies. In the event
of any future purchases, we could issue stock that would dilute our current stockholders’ percentage ownership,
incur debt, assume liabilities, or incur large and immediate write-offs.

Our operation of any acquired business may also involve numerous risks, including:

problems combining the purchased operations, technologies, or products;
unanticipated costs;
diversion of management’s attention from our core business;
difficulties integrating businesses in different countries and cultures;

adverse effects on existing business relationships with suppliers and customers;
risks associated with entering markets in which we have no or limited prior experience; and

potential loss of key employees, particularly those of the purchased organization.

We cannot assure that we will be able to successfully integrate any businesses, products, technologies, or
personnel that we have acquired or that we might acquire in the future and any failure to do so could disrupt our
business and have a material adverse effect on our consolidated financial condition and results of operations.
Moreover, from time to time, we may enter into negotiations for a proposed acquisition, but be unable or
unwilling to consummate the acquisition under consideration. This could cause significant diversion of
management’s attention and out-of-pocket expenses for us. We could also be exposed to litigation as a result of
an unconsummated acquisition, including claims that we failed to negotiate in good faith or misappropriated
confidential information.

Unanticipated changes in our tax rates could affect our future results.

Our future effective tax rates could be favorably or unfavorably affected by unanticipated changes in the mix of
earnings in countries with differing statutory tax rates, changes in the valuation of our deferred tax assets and
liabilities, or by changes in tax laws or our interpretation of such laws. In addition, we may be subject to the

ITEM 1A. RISK FACTORS (CONTINUED)

examination of our income tax returns by the Internal Revenue Service and other U.S. and international tax
authorities. We regularly assess the potential outcomes resulting from these examinations to determine the
adequacy of our provision for income taxes. There can be no assurance that the outcomes from these
examinations will not have an effect on our operating results and consolidated financial condition.

Our failure to effectively comply with the requirements of applicable environmental legislation and
regulation could have a material adverse effect on our revenues and profitability.

Production and marketing of products in certain states and countries may subject us to environmental and other
regulations. In addition, certain states and countries may pass new regulations requiring our products to meet
certain requirements to use environmentally friendly components. The European Union has issued two
directives relating to chemical substances in electronic products. The Waste Electrical and Electronic
Equipment Directive (WEEE) makes producers of certain electrical and electronic equipment financially
responsible for collection, reuse, recycling, treatment and disposal of equipment placed in the European Union
market after August 13, 2005. The Restrictions of Hazardous Substances Directive (RoHS) bans the use of
certain hazardous materials in electric and electrical equipment which are put on the market in the European
Union after July 1, 2006. In the future, China and other countries including the United States are expected to
adopt further environmental compliance programs. If we fail to comply with these regulations, we may not be
able to sell our products in jurisdictions where these regulations apply, which could have a material adverse
effect on our revenues and profitability.

Our failure to effectively comply with regulatory laws pertaining to our foreign operations could have a
material adverse effect on our revenues and profitability.

We are required to comply with U.S. government export regulations in the sale of our products to foreign
customers, including requirements to properly classify and screen our products against a denied parties list prior
to shipment. We are also required to comply with the provisions of the Foreign Corrupt Practices Act (FCPA)
and all other anti-corruption laws of all other countries in which we do business, directly or indirectly, including
compliance with the anti-bribery prohibitions and the accounting and recordkeeping requirements of this law.
Violations of the FCPA could trigger sanctions, including ineligibility for U.S. government insurance and
financing, as well as large fines. Failure to comply with the aforementioned regulations could also deter us
from selling our products in international jurisdictions, which could have a material adverse effect on our
revenues and profitability.

Negative conditions in the global credit markets may impair a portion of our investment portfolio.

Our investment portfolio consists of certificates of deposit, corporate bonds and government municipal bonds.
These marketable securities are classified as available-for-sale and are carried at fair market value. Some of our
investments could experience reduced liquidity, resulting in an adjustment and could result in an impairment
charge should the impairment be considered as other-than-temporary. This loss would be recorded in our
consolidated statement of operations, which could materially adversely impact our consolidated results of
operations and financial condition.

Our consolidated operating results and financial condition may be adversely impacted by worldwide
economic conditions and credit tightening.

If worldwide economic conditions experience a significant downturn, these conditions may make it difficult or
impossible for our customers and suppliers to accurately forecast and plan future business activities, which may
cause them to slow or suspend spending on products and services. Our customers may find it difficult to gain
sufficient credit in a timely manner, which could result in an impairment of their ability to place orders with us

ITEM 1A. RISK FACTORS (CONTINUED)

or to make timely payments to us for previous purchases. If this occurs, our revenue may be reduced, thereby
having a negative impact on our results of operations. In addition, we may be forced to increase our allowance
for doubtful accounts and our days sales outstanding may increase, which would have a negative impact on our
cash position, liquidity and financial condition. We cannot predict the timing or the duration of an economic
downturn in the economy.

We may have additional tax liabilities.

We are subject to income taxes in the United States and many foreign jurisdictions. Significant judgment is
required in determining our worldwide provision for income taxes, including our reserves for uncertain tax
positions. In the ordinary course of business, there are many transactions and calculations where the ultimate
tax determination is uncertain. We regularly are under audit by tax authorities. Although we believe our tax
estimates are reasonable, the final determination of tax audits could be materially different from our historical
income tax provisions and accruals. The results of an audit could have a material effect on our financial
position, results of operations, or cash flows in the period or periods for which that determination is made.

Risks Related to Our Common Stock

If our stock price declines, we may need to recognize an impairment of our goodwill.

If the price of our common stock declines, we could have an impairment of our goodwill. Our value is
dependent upon continued future growth in demand for our products and solutions. If such growth does not
materialize or our forecasts are significantly reduced, we may impair our goodwill. We perform our annual
goodwill impairment assessment on our one reporting unit at June 30 each year.

The price of our common stock has been volatile and could continue to fluctuate in the future.

The market price of our common stock, like that of many other high-technology companies, has fluctuated
significantly and is likely to continue to fluctuate in the future. During fiscal year 2010, the closing price of our
common stock on the NASDAQ Global Select Market ranged from $7.19 to $12.30 per share. Our closing sale
price on November 23, 2010 was $9.68 per share. Announcements by us or others regarding the receipt of
customer orders, quarterly variations in operating results, acquisitions or divestitures, additional equity or debt
financings, results of customer field trials, scientific discoveries, technological innovations, litigation, product
developments, patent or proprietary rights, government regulation and general market conditions may have a
significant impact on the market price of our common stock.

Certain provisions of the Delaware General Corporation Law and our charter documents have an anti-
takeover effect.

There exist certain mechanisms under the Delaware General Corporation Law and our charter documents that
may delay, defer or prevent a change of control. For instance, under Delaware law, we are prohibited from
engaging in certain business combinations with interested stockholders for a period of three years after the date
of the transaction in which the person became an interested stockholder unless certain requirements are met, and
majority stockholder approval is required for certain business combination transactions with interested parties.

Our Certificate of Incorporation contains a “fair price” provision requiring majority stockholder approval for
certain business combination transactions with interested parties, and this provision may not be changed without
the vote of at least 80% of the outstanding shares of our voting stock. Other mechanisms in our charter
documents may also delay, defer or prevent a change of control. For instance, our Certificate of Incorporation
provides that our Board of Directors has authority to issue series of our preferred stock with such voting rights

ITEM 1A. RISK FACTORS (CONTINUED)

and other powers as the Board of Directors may determine. Furthermore, we have a classified board of
directors, which means that our directors are divided into three classes that are elected to three-year terms on a
staggered basis. Since the three-year terms of each class overlap the terms of the other classes of directors, the
entire board of directors cannot be replaced in any one year. Under Delaware law, directors serving on a
classified board may not be removed by shareholders except for cause. Also, pursuant to the terms of our
shareholder rights plan, each outstanding share of common stock has one attached right. The rights will cause
substantial dilution of the ownership of a person or group that attempts to acquire us on terms not approved by
the Board of Directors and may have the effect of deterring hostile takeover attempts. The effect of these anti-
takeover provisions may be to deter business combination transactions not approved by our Board of Directors,
including acquisitions that may offer a premium over the market price to some or all stockholders.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

The following table contains a listing of our current property locations:

In addition to the above locations, we perform research and development activities in various other locations in
the United States and sales activities in various other locations in Europe and Asia which are not deemed to be
principal locations and which are not listed above. We believe that our facilities are adequate for our needs. In
February 2008, we sold our facility in Dortmund, Germany and leased back approximately 40% of the property
for a period of five years, with a renewal option for an additional five years.

Ownership orApproximateLease Location ofSquareExpirationPropertyUse of FacilityFootageDateMinnetonka, MNResearch & development, sales, sales support,130,000Owned(Corporate headquarters)marketing and administrationEden Prairie, MNManufacturing and warehousing58,000OwnedMinneapolis, MNEngineering services16,837November 2016Waltham, MAResearch & development, sales and sales support6,836October 2015Austin, TXSales, sales support, marketing6,563March 2014and administrationDavis, CASales, sales support, research & development24,000December 2012Lindon, UTSales, marketing, research & development11,986December 2015and administrationHerndon, VASales, marketing and tech support2,416October 2011Hong Kong, ChinaSales, marketing and administration4,061February 2013Beijing, ChinaSales, marketing and administration2,372November 2012Shanghai, ChinaSales, marketing and administration1,251June 2012Dortmund, GermanySales, sales support, marketing and 21,485March 2013administrationBreisach, GermanySales, marketing, research & development, manufacturing, 8,748July 2013warehousing and administrationNeuilly sur Seine, FranceSales and marketing2,895January 2015Ilkley, UKSales, sales support, marketing and administration5,475October 2015Logrono, SpainSales, research & development and administration3,228January 2017Tokyo, JapanSales1,371November 2011Bangalore, IndiaSales, research & development and administration9,189July 2014

ITEM 3. LEGAL PROCEEDINGS

Initial Public Offering Securities Litigation
On April 19, 2002, a consolidated amended class action complaint was filed in the United States District Court
for the Southern District of New York asserting claims relating to the initial public offering (IPO) of our
subsidiary NetSilicon, Inc. and approximately 300 other public companies. We acquired Net Silicon, Inc. on
February 13, 2002. The complaint names us as a defendant along with NetSilicon, certain of its officers and
certain underwriters involved in NetSilicon’s IPO, among numerous others, and asserts, among other things,
that NetSilicon’s IPO prospectus and registration statement violated federal securities laws because they
contained material misrepresentations and/or omissions regarding the conduct of NetSilicon’s IPO underwriters
in allocating shares in NetSilicon’s IPO to the underwriters’ customers. We believe that the claims against the
NetSilicon defendants are without merit and have defended the litigation vigorously. Pursuant to a stipulation
between the parties, the two named officers were dismissed from the lawsuit, without prejudice, on October 9,
2002.

As previously disclosed, the parties advised the District Court on February 25, 2009 that they had reached an
agreement-in-principle to settle the litigation in its entirety. A stipulation of settlement was filed with the
District Court on April 2, 2009. On June 9, 2009, the District Court preliminarily approved the proposed global
settlement. Notice was provided to the class, and a settlement fairness hearing, at which members of the class
had an opportunity to object to the proposed settlement, was held on September 10, 2009. On October 6, 2009,
the District Court issued an order granting final approval to the settlement. Several objectors have since
appealed the order approving the settlement, and those appeals remain pending.

Under the settlement, our insurers are to pay the full amount of settlement share allocated to us, and we would
bear no financial liability beyond our deductible of $250,000. While there can be no guarantee as to the
ultimate outcome of this pending lawsuit, we expect that our liability insurance will be adequate to cover any
potential unfavorable outcome, less the applicable deductible amount of $250,000 per claim. As of September
30, 2010, we have an accrued liability for the anticipated settlement of $300,000 which we believe is adequate
and reflects the amount of loss that is probable and a receivable related to the insurance proceeds of $50,000,
which represents the anticipated settlement of $300,000 less our $250,000 deductible. In the event we should
have losses that exceed the limits of the liability insurance, such losses could have a material adverse effect on
our business and our consolidated results of operations or financial condition.

Shareholder Derivative Litigation
On June 18, 2010 and June 24, 2010, respectively, two shareholders filed derivative actions against our
directors, our former Chief Financial Officer, and another executive officer, in the Hennepin County District
Court, State of Minnesota, in Minneapolis. Digi also was named as a nominal defendant in the actions. The
complaints alleged that the individual defendants caused us to operate in countries with dubious business
practices without having internal controls or an accounting system that were adequate to ensure that we did not
violate the Foreign Corrupt Practices Act. The complaints alleged causes of action against the individual
defendants for (1) breach of fiduciary duty, (2) waste of corporate assets, and (3) unjust enrichment. The
complaints sought to recover, purportedly on our behalf, unspecified damages, equitable relief, attorneys’ fees,
and costs of litigation. On August 2, 2010, we filed a motion to dismiss these lawsuits. On August 16, 2010,
the derivative actions were dismissed without prejudice.

Patent Infringement Lawsuit
On May 11, 2010, SIPCO, LLC filed a patent infringement lawsuit against Digi in federal court in the Eastern
District of Texas. The lawsuit included allegations against Digi and five other companies pertaining to the
infringement of SIPCO’s patents by wireless mesh networking products. The lawsuit seeks monetary and non-
monetary relief. We cannot predict the outcome of this matter at this time or whether it will have a materially
adverse impact on our business prospects and our consolidated financial condition, results of operations or cash
flow.

ITEM 3. LEGAL PROCEEDINGS (CONTINUED)

In addition to the matters discussed above, in the normal course of business, we are subject to various claims
and litigation, including patent infringement and intellectual property claims. Our management expects that
these various claims and litigation will not have a material adverse effect on our consolidated results of
operations or financial condition.

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER

MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Stock Listing
Our Common Stock trades under the symbol DGII. Since July 3, 2006, our Common Stock has traded on the
NASDAQ Global Select Market tier of the NASDAQ Stock Market LLC and prior to that time was traded on
the NASDAQ National Market tier. On November 23, 2010, the number of holders of our Common Stock was
approximately 8,761, consisting of 180 record holders and approximately 8,581 stockholders whose stock is
held by a bank, broker or other nominee.

High and low sale prices for each quarter during the years ended September 30, 2010 and 2009, as reported on
the NASDAQ Stock Market LLC, were as follows:

Stock Prices

Dividend Policy
We have never paid cash dividends on our Common Stock. Our Board of Directors presently intends to retain
all earnings for use in our business, except for periodic stock repurchases, and does not anticipate paying cash
dividends in the foreseeable future.

Issuer Repurchases of Equity Securities

We did not repurchase any of our equity securities in the fourth quarter or fiscal year ended September 30,
2010. Of the 1,500,000 shares authorized to be repurchased, 135,638 shares remained available for repurchase
at September 30, 2010.

2010FirstSecondThirdFourthHigh9.57$ 12.32$ 11.48$ 9.55$ Low6.99$ 8.87$ 7.86$ 7.29$ 2009FirstSecondThirdFourthHigh11.10$ 8.98$ 10.72$ 10.87$ Low6.88$ 6.26$ 6.40$ 8.11$

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER

MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES (CONTINUED)

Performance Evaluation

The graph below compares the total cumulative stockholders’ return on our Common Stock for the period from
the close of the Nasdaq Stock Market – U.S. Companies on September 30, 2005 to September 30, 2010, the last
day of fiscal 2010, with the total cumulative return on the CRSP Total Return Index for the Nasdaq Stock
Market – U.S. Companies (the “CRSP Index”) and the CRSP Index for Nasdaq Telecommunications Stocks
(the “Peer Index”) over the same period. We have determined that our line of business is mostly comparable to
those companies in the Peer Index. The index level for the graph and table was set to $100 on September 30,
2005, for our Common Stock, the CRSP Index and the Peer Index and assumes the reinvestment of all
dividends.

FY05FY06FY07FY08FY09FY010Digi International Inc.100.00125.82132.7195.0679.4088.44CRSP Index100.00105.44124.8098.4078.9689.24Peer Index100.00111.56130.7990.7090.50115.14$70 $80 $90 $100 $110 $120 $130 $140 FY05FY06FY07FY08FY09FY010COMPARISON OF 5-YEAR CUMULATIVE TOTAL RETURNDigi International Inc.CRSP IndexPeer Index

ITEM 6. SELECTED FINANCIAL DATA
(In thousands except per common share amounts and number of employees)

For the fiscal years ended September 3020102009200820072006Net sales (1)182,548$ 165,928$ 185,056$ 173,263$ 144,663$ Gross profit 92,209$ 81,265$ 97,869$ 91,346$ 77,505$ Sales and marketing 37,010 35,304 36,879 33,499 28,591 Research and development 27,825 26,381 27,040 24,176 20,861 General and administrative (2)17,889 14,557 16,035 13,343 12,830 Restructuring (benefit) costs(468) 1,953 - - - Acquired in-process research and development- - 1,900 - 2,000 Operating income 9,953 3,070 16,015 20,328 13,223 Total other income, net (3)566 1,212 2,900 3,396 2,044 Income before income taxes10,519 4,282 18,915 23,724 15,267 Income tax provision (4)1,578 199 6,564 3,951 4,154 Net income 8,941$ 4,083$ 12,351$ 19,773$ 11,113$ Net income per common share, basic: Basic0.36$ 0.16$ 0.48$ 0.78$ 0.48$ Diluted0.36$ 0.16$ 0.47$ 0.76$ 0.46$ Balance sheet data as of September 30: Working capital (total current assets less total current liabilities)122,105$ 106,121$ 112,236$ 115,703$ 83,341$ Total assets266,965$ 258,948$ 271,416$ 251,826$ 225,321$ Long-term debt and capital lease obligations-$ 9$ 345$ 358$ 725$ Stockholders' equity240,556$ 229,586$ 231,934$ 222,905$ 193,830$ Book value per common share (stockholders' equity divided by outstanding shares)9.59$ 9.29$ 9.14$ 8.73$ 7.74$ Number of employees as of September 30648 634 663 564 549 (1) Acquisitions provided the following net sales during the year of acquisition: MobiApps in fiscal 2009 of $0.4 million, Sarian and Spectrum in fiscal 2008 of $6.5 million and MaxStream in fiscal 2006 of $3.2 million.(2) Included in general and administration expense in fiscal 2010 is $1.4 million ($0.9 million after tax) of investigation and remediation expenses (see Note 19 to our Consolidated Financial Statements).(3) Included in total other income, net is an other-than-temporary impairment charge of $1.0 million ($0.7 million after tax) recorded during fiscal 2008 on an investment in a bond issued by Lehman Brothers (see Note 6 to our Consolidated Financial Statements).(4) In fiscal 2010, 2009 and 2008, we recorded net discrete tax benefits of $2.3 million, $1.2 million and $0.5 million, respectively (see Note 10 to our Consolidated Financial Statements). In fiscal 2007 and 2006, we reversed income tax reserves of $4.3 million and $1.6 million, respectively, primarily due to the closing of a German tax audit and the statutory closing of a prior U.S. federal and state tax year and other discrete tax benefits for fiscal 2007 and the settlement of tax audits with the French government in fiscal 2006.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

OVERVIEW

We operate in the communications technology industry, which is characterized by rapid technological advances
and evolving industry standards. The market can be significantly affected by new product introductions and
marketing activities of industry participants. We compete for customers on the basis of existing and planned
product features, service capabilities, company reputation, brand recognition, technical support, relationships
with partners, quality and reliability, product development capabilities, price and availability. We help
customers connect, monitor, and control local or remote electronic devices over a network, via the Internet or
via satellite.

Our revenues consist of products that are in non-embedded and embedded product groupings. The embedded
products include modules, chips, software and development tools, single-board computers, satellite
communication products and engineering design services. Non-embedded products include cellular routers,
cellular gateway products, wireless communications adapters, serial servers, console servers, USB connected
products, remote display products and serial cards. Our non-embedded serial cards are in the mature phase of
their product life cycles. Our strategy is to focus on key applications, customers and markets to efficiently
manage the migration from products that are in the mature phase of their product life cycles to other newer
technologies.

We experienced an increase in both revenue and profitability in fiscal 2010 compared to the prior fiscal year as
we partially recovered from the domestic economic downturn and benefited from actions taken in fiscal 2009 to
position ourselves for growth. Our business was negatively impacted by the effects of the severe downturn in
the economy in fiscal 2009, and we experienced a reduction in demand for our products in all geographic
locations. In response to the depressed economic conditions, we put in place a restructuring plan that included
various cost reduction actions. We also reduced our investment in lower growth product lines while increasing
our investment in wireless products and solutions that include hardware, software and services. These actions
allowed us to reduce our profit breakeven point and remain profitable despite the negative economic conditions
that existed throughout fiscal 2009.

Net sales were $182.5 million for fiscal 2010 compared to $165.9 million in fiscal 2009, an increase of $16.6
million, or 10.0%. Our wireless product net sales grew from $56.2 million, or 33.9% of net sales, in fiscal 2009
to $66.4 million, or 36.3% of net sales, in fiscal 2010, an increase of 18.0%. We expect continued strength in
wireless products net sales resulting from large customer opportunities for our wireless solutions, primarily in
the Smart Grid, fleet management and medical markets.

Gross profit increased by $10.9 million, or 13.5% in fiscal 2010. Gross margin improved from 49.0% for the
fiscal year ended September 30, 2009 to 50.5% for the fiscal year ended September 30, 2010. The business
restructuring discussed above contributed to the improvement in our gross margin, in addition to other cost
reduction initiatives.

Total operating expenses were $82.3 million in fiscal 2010 compared to $78.2 million in fiscal 2009, an
increase of $4.1 million, or 5.2%. We suspended our non-sales incentive compensation program for fiscal
2009, for both executive management as well as a large part of the employee base. This program was reinstated
at a reduced level for fiscal 2010. We also reduced our sales commission program in the last half of fiscal 2009
and we fully restored the program in fiscal 2010. Also, during the last six months of fiscal 2010, we incurred
$1.4 million of expense related to the investigation and remediation that is discussed in Note 19 to our
consolidated financial statements.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

OVERVIEW (CONTINUED)

Net income was $8.9 million, or 4.9% of net sales, in fiscal 2010 compared to $4.1 million, or 2.5% of net sales
in fiscal 2009. Net income during fiscal 2010 benefited by $2.3 million, resulting from the reversal of tax
reserves associated with the statutory closing of a prior tax year and the conclusion of an audit of prior tax
years. Net income during fiscal 2009 benefited by $1.2 million, resulting from the reversal of tax reserves
associated with the extension of the research and development credit, the resolution of certain state tax matters,
and the closing of a prior tax year.

CONSOLIDATED RESULTS OF OPERATIONS

The following table sets forth selected information from our Consolidated Statements of Operations, expressed
as a percentage of net sales and as a percentage of change from year-to-year for the years indicated.

NET SALES

Net sales were $182.5 million in fiscal 2010 compared to $165.9 million in fiscal 2009, an increase of $16.6
million or 10.0%, primarily due to an increase of $26.8 million in the net sales of modules, cellular products,
serial servers, wireless communication adaptors, USB products, engineering design services and satellite-related
products. This was partially offset by a decrease of $4.9 million in net sales of products included in our product
portfolio resulting from the Sarian acquisition which were higher in fiscal 2009, primarily due to a large sale to
a legacy customer, and a decrease of $5.3 million in net sales due to large sales of a discontinued chip set in
fiscal 2009. The increase in net sales in fiscal 2010 compared to fiscal 2009 is primarily driven by increased
volume and demand rather than pricing changes. We did not experience a material change in revenue due to
pricing. As we continue to focus on growing our wireless sales, our wireless product net sales grew from $56.2
million, or 33.9% of net sales, in fiscal 2009, to $66.4 million, or 36.3% of net sales, in fiscal 2010, or an
increase of 18.0%.

Net sales were $165.9 million in fiscal 2009 compared to $185.1 million in fiscal 2008, a decrease of $19.2
million or 10.3%. Revenue decreased primarily due to weakened economic conditions and changes in product

($ in thousands)% Increase (decrease)20102009Year ended September 30,comparedcompared201020092008to 2009to 2008Net sales182,548$ 100.0 %165,928$ 100.0 %185,056$ 100.0 %10.0 %(10.3) %Cost of sales (exclusive of amortization of purchased and core technology shown separately below) 86,266 47.3 80,470 48.5 83,096 44.9 7.2 (3.2) Amortization of purchased and core technology4,073 2.2 4,193 2.5 4,091 2.2 (2.9) 2.5 Gross profit92,209 50.5 81,265 49.0 97,869 52.9 13.5 (17.0) Operating expenses: Sales and marketing 37,010 20.3 35,304 21.3 36,879 20.0 4.8 (4.3) Research and development 27,825 15.2 26,381 15.9 27,040 14.6 5.5 (2.4) General and administrative17,889 9.8 14,557 8.7 16,035 8.6 22.9 (9.2) Restructuring (benefit) costs(468) (0.3) 1,953 1.2 - - (124.0) N/M In-process research and development- - - - 1,900 1.0 N/M(100.0) Total operating expenses82,256 45.0 78,195 47.1 81,854 44.2 5.2 (4.5) Operating income9,953 5.5 3,070 1.9 16,015 8.7 224.2 (80.8) Total other income, net566 0.3 1,212 0.7 2,900 1.5 (53.3) (58.2) Income before income taxes10,519 5.8 4,282 2.6 18,915 10.2 145.7 (77.4) Income tax provision1,578 0.9 199 0.1 6,564 3.5 693.0 (97.0) Net income8,941$ 4.9 %4,083$ 2.5 %12,351$ 6.7 %119.0 %(66.9) %N/M means not meaningful

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

NET SALES (CONTINUED)

mix. Net sales in fiscal 2009 and 2008 included $20.7 million and $6.5 million of net sales from Sarian and
Spectrum products, respectively. Fiscal 2009 net sales also included $0.4 million attributable to MobiApps
which was acquired on June 8, 2009. Fiscal 2008 net sales also included $6.5 million of net sales from Sarian
and Spectrum from their dates of acquisition. Net sales from all other product lines decreased by $33.8 million,
or 18.9%, during fiscal 2009 as compared to fiscal 2008, primarily due to weakened economic conditions,
except for increases in net sales of cellular, wireless communication adapters and chips and software.

Fluctuation in foreign currency rates compared to the prior year’s rates had an unfavorable impact on net sales
of $0.3 million in fiscal 2010 and $5.9 million in fiscal 2009 and a favorable impact on net sales of $2.2 million
in fiscal 2008.

Net Sales by Product Category
The following table presents our revenue by product category:

Non-Embedded
Non-embedded products net sales increased $8.9 million, or 9.7%, in fiscal 2010 compared to fiscal 2009. The
increase was mostly due to a $13.8 million increase in net sales of cellular products, serial servers, wireless
communication adaptors and USB products, offset by a decrease of $4.9 million in net sales of products
included in our product portfolio resulting from the Sarian acquisition which were higher in fiscal 2009
primarily due to a large sale to a legacy customer.

Non-embedded products net sales decreased $7.3 million, or 7.3%, in fiscal 2009 compared to fiscal 2008 due
mostly to decreases in sales of serial cards, serial servers and USB connected products, partially offset by
increases in cellular and wireless communication adapters. Non-embedded net sales related to Sarian branded
products were $16.2 million in fiscal 2009 compared to $5.7 million in fiscal 2008, which included five months
of Sarian net sales from the date of acquisition.

Embedded
Embedded products net sales increased $7.7 million, or 10.4%, in fiscal 2010 compared to fiscal 2009. The
increase was primarily due to a $13.0 million increase in net sales of modules and satellite-related products,
partially offset by a decrease of $5.3 million primarily related to large sales of a discontinued chip set in fiscal
2009.

Embedded products net sales decreased $11.9 million, or 13.8%, in fiscal 2009 compared to fiscal 2008 due
mostly to decreases of modules and network interface cards, partially offset by an increase in chips and
software. Embedded net sales in fiscal 2009 also include incremental net sales of $3.8 million from Spectrum
design services.

($ in millions)% of Net Sales201020092008201020092008Non-embedded100.1$ 91.2$ 98.5$ 54.9%55.0%53.2%Embedded82.4 74.7 86.6 45.1%45.0%46.8%Total182.5$ 165.9$ 185.1$ 100.0%100.0%100.0%Net Sales

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

NET SALES (CONTINUED)

Net Sales by Distribution Channel
The following table presents our revenue by distribution channel:

During fiscal 2010, net sales in the Distribution channel increased by $28.9 million, or 33% compared to net
sales in fiscal 2009. Net sales in fiscal 2010 in the Direct / OEM channel decreased by $12.3 million, or 15.7%
compared to the prior fiscal year. The increase in net sales in the Distribution channel compared to the
Direct / OEM channel is primarily due to fulfillment of customer orders for wireless products.

The decreases in net sales in both the Direct / OEM and the Distribution channels during fiscal 2009 compared
to fiscal 2008 primarily resulted from a weakened economy.

We continued to focus on maintaining our channel strategy, which includes employing additional channel
partners and releasing complementary products.

Net Sales by Geographic Area
Our revenue by geographic location of our customers is as follows:

Net sales in fiscal 2010 increased $16.6 million over fiscal 2009 as the U.S. economy partially recovered from
the domestic economic downturn. International net sales remained the same and were $75.2 million, or 41.2%
of net sales, in fiscal 2010, compared to $75.2 million, or 45.3% of net sales, in fiscal 2009.

Net sales in fiscal 2010 for North America increased $16.6 million due to an increase in non-embedded
products of $11.8 million and embedded products of $4.8 million. Net sales in fiscal 2009 as compared to fiscal
2008 decreased $20.5 million in North America, partially offset by incremental revenue of $3.8 million from
the Spectrum acquisition in July 2008.

Net sales in Europe, Middle East, and Africa (“EMEA”) decreased $8.3 million from fiscal 2009 to fiscal 2010
as fiscal 2009 included large sales of a discontinued chip set and a large sale to a legacy customer of Sarian.
The increase in net sales in EMEA during fiscal 2009 and 2008 is primarily due to the acquisition of Sarian in
April 2008, which provided revenue of $16.2 million and $5.7 million, respectively.

($ in millions)% of Net Sales201020092008201020092008Direct / OEM channel66.2$ 78.5$ 87.5$ 36.3%47.3%47.3%Distribution channel116.3 87.4 97.6 63.7%52.7%52.7% Total company182.5$ 165.9$ 185.1$ 100.0%100.0%100.0%Net Sales($ in millions)Net Sales % of Net Sales201020092008201020092008North America107.3$ 90.7$ 107.3$ 58.8%54.7%58.0%Europe, Middle East & Africa47.7 56.0 53.0 26.2%33.7%28.6%Asian countries22.7 15.6 19.7 12.4%9.4%10.6%Latin America4.8 3.6 5.1 2.6%2.2%2.8% Total net sales182.5$ 165.9$ 185.1$ 100.0%100.0%100.0%

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

NET SALES (CONTINUED)

Revenue for the Latin America and Asian countries increased by $8.3 million in fiscal 2010 compared to fiscal
2009, and revenue decreased by $5.6 million in fiscal 2009 compared to fiscal 2008. The increase in revenue
for fiscal 2010 for both Latin America and Asian countries was due to an increase of $4.9 million of embedded
products and $3.4 million of non-embedded products. Also in fiscal 2010, we recorded a full year of net sales
related to the MobiApps acquisition compared to three months of net sales in fiscal 2009. The decrease in
revenue for fiscal 2009 compared to fiscal 2008 for Latin America was primarily due to a reduction in net sales
of non-embedded products and for Asian countries was due to a reduction in net sales of both embedded and
non-embedded products primarily resulting from the global economic conditions in both regions. MobiApps
revenue of $0.3 million from date of acquisition of June 2009 is included in fiscal 2009 Asian countries
revenue.

GROSS PROFIT

2010 compared to 2009
Gross profit was $92.2 million and $81.3 million in fiscal 2010 and 2009, respectively, an increase of $10.9
million, or 13.5%. The gross margin for fiscal 2010 was 50.5% compared to 49.0% in fiscal 2009. Gross
margin increased 2.1% primarily due to a reduction of costs as a result of the business restructuring in fiscal
2009 and other cost reduction initiatives and also increased 0.3% related to a reduction in amortization of
purchased and core technology as some technology is fully amortized. This was partially offset by a 0.9%
decrease in gross margin due to unfavorable product mix primarily related to cellular and certain embedded
products. Amortization of purchased and core technology was $4.1 million or 2.2% of net sales in fiscal 2010
as compared to $4.2 million or 2.5% of net sales in fiscal 2009.

2009 Compared to 2008
Gross margin for fiscal 2009 was 49.0% compared to 52.9% for 2008. The decrease in gross margin is
primarily a result of product and customer mix changes as we had a large sale to a legacy customer which
generated a lower gross margin. The gross margin also decreased due to an increase in the amortization of
purchased and core technology due to the acquisitions of Sarian, Spectrum and MobiApps. Amortization of
purchased and core technology was $4.2 million or 2.5% of net sales in fiscal 2009 as compared to $4.1 million
or 2.2% of net sales in fiscal 2008.

OPERATING EXPENSES

2010 Compared to 2009
Operating expenses were $82.3 million in fiscal 2010, an increase of $4.1 million or 5.2%, compared to $78.2
million in fiscal 2009. Compensation-related expenses, including salaries, incentive compensation,
commissions and stock-based compensation increased $1.8 million as we fully restored the sales commission
program and partially reinstated our non-sales incentive compensation program for fiscal 2010. We also
incurred professional fees of $1.4 million related to the investigation and remediation that is discussed in Note
19 to our consolidated financial statements and incremental ongoing expenses related to the fiscal 2009
MobiApps acquisition of $1.6 million.

Sales and marketing expenses were $37.0 million in fiscal 2010, an increase of $1.7 million or 4.8%, compared
to $35.3 million in fiscal 2009. The increase was due to an increase of $1.0 million in commission expense,
$0.4 million in incremental expenses for MobiApps and $0.3 million of other various sales and marketing
expenses.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

OPERATING EXPENSES (CONTINUED)

Research and development expenses were $27.8 million in fiscal 2010, an increase of $1.4 million or 5.5%,
compared to $26.4 million in fiscal 2009. The increase was due to an increase of $0.9 million in professional
services, contract labor and certification testing, $0.7 million in incremental expenses for MobiApps, and $0.4
million of compensation-related expenses, offset by a net reduction of $0.6 million of expense primarily related
to a development project that was completed in fiscal 2009.

General and administrative expenses were $17.9 million in fiscal 2010, an increase of $3.4 million or 22.9%,
compared to $14.5 million in fiscal 2009. General and administrative expenses increased by $2.0 million due to
increased professional fees which includes $1.4 million of investigation and remediation fees (see Note 19 to
our Consolidated Financial Statements). In addition, the incremental expenses for MobiApps increased general
and administrative expenses by $0.5 million, compensation-related expenses increased by $0.3 million and
other miscellaneous general and administrative expenses increased by $0.6 million.

2009 Compared to 2008
Operating expenses were $78.2 million in fiscal 2009, a decrease of $3.7 million or 4.5%, compared to $81.9
million in fiscal 2008. Compensation-related expenses, including salaries, incentive compensation and stock-
based compensation, decreased by $3.2 million in fiscal 2009 as compared to fiscal 2008 due to the suspension
of our non-sales incentive program for fiscal 2009 and a reduction of our sales commission program in the last
half of fiscal 2009 as well as a reduction in the number of employees. Incremental operating expenses resulting
from the acquisitions of Sarian, Spectrum and MobiApps were $4.4 million. We recorded a charge of $1.9
million for in-process research and development incurred in 2008 resulting from the Sarian acquisition. On
April 23, 2009, we announced a restructuring initiative that resulted in a restructuring charge of $2.0 million.

Sales and marketing expenses were $35.3 million in fiscal 2009, a decrease of $1.6 million or 4.3%, compared
to $36.9 million in fiscal 2008. Sales and marketing expenses decreased by $0.9 million for compensation-
related expenses, $1.2 million for advertising and marketing literature, $0.5 million for reduced travel and
entertainment and by $0.3 million for miscellaneous other sales and marketing expenses. This was partially
offset by incremental expenses related to Sarian, Spectrum and MobiApps which increased sales and marketing
expenses by $1.3 million.

Research and development expenses were $26.4 million in fiscal 2009, a decrease of $0.7 million or 2.4%,
compared to $27.1 million in fiscal 2008. Research and development expenses decreased by $1.2 million for
compensation-related expenses, $0.3 million for product certifications and $0.5 million for other research and
development expenses. This was partially offset by incremental expenses for Sarian, Spectrum and MobiApps
which increased research and development expenses by $1.3 million.

General and administrative expenses were $14.5 million in fiscal 2009, a decrease of $1.5 million or 9.2%,
compared to 16.0 million in fiscal 2008. The reduction in general and administrative expenses were due to
decreases of $1.1 million for compensation-related expenses, $0.6 million for professional fees, $0.5 million for
amortization and depreciation, $0.6 million for bad debt expense and a $0.5 million decrease in other general
and administrative expenses. This was partially offset by incremental expenses of $1.8 million due to Sarian,
Spectrum and MobiApps.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

RESTRUCTURING

On April 23, 2009 we announced a business restructuring to increase our focus on wireless products and
solutions that include hardware, software and services. The restructuring included the closing of an
engineering facility in Long Beach, California, and the relocation and consolidation of the manufacturing
facility in Davis, California to our Minnetonka, Minnesota headquarters. We paid a lease cancellation fee
for one of the leased facilities in Davis and had vacated the facility as of September 30, 2009. We
continue to maintain non-manufacturing activities at the remaining leased facility in Davis, California. As
a result of these initiatives, during the third quarter of fiscal 2009 we recorded a $2.0 million charge, which
consisted of $1.8 million for employee termination costs for 86 positions and $0.2 million for contract
termination fees and other relocation costs.

All 86 positions were vacated as of September 30, 2009. The employee termination costs included
severance and the associated costs of continued medical benefits and outplacement services. The other
restructuring expenses included contract termination fees for non-renewal of lease terms relating to one of
the facilities in Davis, California and relocation expenses for employees.

During fiscal 2010, we recorded an additional $0.1 million for an additional six months of continued
medical benefits as a result of new healthcare legislation passed in December 2009 related to the
aforementioned restructuring. Also during fiscal 2010 we reversed $0.5 million of the restructuring
accrual since costs associated with continued medical benefits and relocation were lower than expected.

ACQUIRED IN-PROCESS RESEARCH AND DEVELOPMENT

Sarian Systems, Ltd.
On April 28, 2008, we acquired Sarian Systems, Ltd. (“Sarian”). Prior to the acquisition, Sarian was a
privately held corporation. Sarian is located in the United Kingdom and is a leader in the European
wireless router market. The total purchase price of $30.9 million was for all of the outstanding ordinary
shares of Sarian.

At the time of acquisition, Sarian had development projects in process associated with the IPV6, Gate Array and
VPN technologies. We estimated that $1.9 million of the purchase price represented the fair value of acquired
in-process research and development related to the products listed below (in thousands):

These products were under development, had a measurable percentage completed and a documented expected
life, had not yet reached technological feasibility, and had no alternative future uses. This amount was
expensed as a non-deductible tax charge upon consummation of the acquisition.

All of the acquired development projects were completed in fiscal 2009.

IPV61,300$ Gate Array400VPN technologies200 Total in-process research and development1,900$

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

OTHER INCOME, NET

2010 Compared to 2009
Total other income, net was $0.6 million in fiscal 2010, a decrease of $0.6 million compared to $1.2 million in
fiscal 2009. We realized interest income on marketable securities and cash and cash equivalents of $0.4 million
in fiscal 2010 compared to $1.4 million in fiscal 2009. Although our average investment balance during fiscal
2010 was $69.0 million compared to $57.6 million in fiscal 2009, the decrease in interest income was primarily
due to a lower than average interest rate as we earned an average interest rate of 0.5% during fiscal 2010
compared to 2.4% during fiscal 2009. Interest expense was $0.1 million in fiscal 2010 as compared to $0.3
million in fiscal 2009 as we made one of the deferred payments during fiscal 2010 for the Spectrum acquisition.
Other income, net also increased $0.3 million related to a net increase in foreign currency transaction gains in
fiscal 2010 compared to fiscal 2009.

2009 Compared to 2008
Other income, net was $1.2 million in fiscal 2009, a decrease of $1.7 million compared to $2.9 million in fiscal
2008. During fiscal 2009, we realized $1.4 million of interest income on marketable securities and cash and
cash equivalents compared to $3.6 million during fiscal 2008. The decrease in interest income was due to lower
average investment balances and lower average interest rates. The average investment balance during fiscal
2009 was $57.6 million compared to $77.1 million for fiscal 2008. We earned an average interest rate of 2.4%
during fiscal 2009 compared to 4.5% for fiscal 2008. Other income, net also decreased $0.4 million related to a
net decrease in foreign currency transaction gains in fiscal 2009 compared to fiscal 2008. Further, we recorded
an other-than-temporary impairment charge of $1.0 million in fiscal 2008 related to a bond issued by Lehman
Brothers. No additional impairment was recorded in fiscal 2009.

INCOME TAXES

Our effective income tax rate was 15.0%, 4.6% and 34.7% for fiscal 2010, 2009 and 2008, respectively.

During fiscal 2010, we reversed $2.3 million in income tax reserves associated primarily with the closing of
prior tax years through statute expiration and the conclusion of a federal tax audit. While the statutes of
limitations have not expired, U.S. federal income tax returns for the periods ended September 30, 2007 and
September 30, 2008 have been audited by and settled with the Internal Revenue Service. The aforementioned
income tax benefits resulting from the reversal of income tax reserves and other discrete tax benefits reduced
the effective tax rate by 22 percentage points in fiscal 2010.

During fiscal 2009, we reversed $0.6 million in income tax reserves primarily associated with the statutory
closing of a prior U.S. federal and state tax year and settlement of prior liabilities under amnesty programs. We
recorded an additional current discrete tax benefit of $0.5 million resulting from the enactment on October 3,
2008 of the retroactive extension of the research and development tax credit for activity from January 1, 2008 to
September 30, 2008. We also recorded adjustments to actual for items reported on the tax returns filed for
fiscal 2007 and 2008. The aforementioned income tax benefits resulting from the reversal of income tax
reserves and other discrete tax benefits reduced the effective tax rate by 27 percentage points in fiscal 2009.

During fiscal 2008, we reversed $0.3 million in income tax reserves primarily associated with the statutory
closing of a prior U.S. federal and state tax year. We recorded an additional $0.2 million of discrete tax benefits
as a result of a filing of a prior year tax return and adjustments to actual for items reported on the tax returns for
fiscal 2007.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

INFLATION

Management believes that during fiscal years 2010, 2009 and 2008, inflation has not had a material effect on
our operations or on our consolidated financial position.

LIQUIDITY AND CAPITAL RESOURCES

We have financed our operations principally with funds generated from operations. We had cash, cash
equivalents and short-term marketable securities of $87.6 million, $70.7 million and $73.5 million at September
30, 2010, 2009 and 2008, respectively. Our working capital was $122.1 million, $106.1 million and $112.2
million at September 30, 2010, 2009 and 2008, respectively.

Net cash provided by operating activities was $16.1 million during fiscal 2010 compared to $15.7 million
during fiscal 2009, a net increase of $0.4 million. This net increase is due to an increase in net income of
$4.9 million and a net increase of $0.2 million of other non-cash items, offset by a decrease of $1.0 million
in deferred income taxes and a $3.7 million decrease due to changes in working capital. Changes in
working capital decreased cash flows by $3.7 million primarily due to an $11.9 million decrease in
accounts receivable as the receivables balance increased due to higher revenue in September 2010 than in
September 2009. Inventory levels were approximately the same at September 30, 2010 and 2009, however
inventories decreased $3.6 million at September 30, 2009 compared to 2008. This was offset by a net
increase of $6.0 million related to changes in accounts payable and a net increase of $5.8 million related to
changes in other assets and accrued expenses. Net cash provided by operating activities was $15.7 million
during fiscal 2009 compared to $24.1 million for fiscal 2008, a net decrease of $8.4 million. This net
decrease is primarily due to a decrease in net income of $8.3 million, and decreases of $1.0 million related
to an other-than-temporary impairment charge during fiscal 2008, $1.1 million in deferred income taxes,
and $1.9 million related to an in-process research and development charge in fiscal 2008. This was
partially offset by an increase of $1.1 million of other non-cash items and an increase of $3.5 million due
to changes in working capital. The changes in working capital increased cash flows by $3.5 million
primarily due to increases resulting from changes in accounts receivable and inventories, partially offset by
decreases in accounts payable, income taxes payable (receivable) and other accrued expenses.

Net cash used by investing activities was $15.2 million in fiscal 2010 as compared to net cash provided by
investing activities of $25.3 million during fiscal 2009, a net decrease of $40.5 million. Net purchases of
marketable securities in fiscal 2010 offset by net settlements of marketable securities in fiscal 2009 resulted in a
net decrease of $41.3 million. We used cash of $3.0 million for a deferred payment related to the Spectrum
acquisition. In fiscal 2009 we spent $3.0 million related to the acquisition of the assets of MobiApps and
reduced our capital expenditures by $0.8 million. Net cash provided by investing activities was $25.3 million in

Consolidated Statement of Cash Flow Highlights (in thousands)201020092008Operating activities16,095$ 15,686$ 24,070$ Investing activities(15,167) 25,286 (22,370) Financing activities2,604 (5,427) (2,564) Effect of exchange rate changes on cash and cash equivalents(1,023) (1,287) (3,335) Net increase (decrease) in cash and cash equivalents2,509$ 34,258$ (4,199)$ Year ended September 30,

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

LIQUIDITY AND CAPITAL RESOURCES (CONTINUED)

fiscal 2009 as compared to net cash used by investing activities of $22.4 million in fiscal 2008, an increase of
$47.7 million. The increase is a result of $23.5 million of additional net proceeds of marketable securities.
Cash spent on acquisitions and contingent purchase price payments in fiscal 2008 was $33.2 million compared
to $3.0 million in fiscal 2009. We spent $0.5 million less in fiscal 2009 as compared to fiscal 2008 on capital
expenditures. In fiscal 2008 we received $6.9 million relating to the sale of our building in Dortmund,
Germany in fiscal 2008 (see Note 12 to our Consolidated Financial Statements) offset by a deposit of $0.4
million in a restricted cash account related to the leaseback.

Net cash provided by financing activities was $2.6 million in fiscal 2010 as compared to net cash used in
financing activities of $5.4 million in fiscal 2009, a net increase of $8.0 million. We spent $6.6 million related
to treasury stock repurchases in fiscal 2009. In fiscal 2010 compared to fiscal 2009, we received an additional
$1.1 million in proceeds from the exercise of stock options and employee stock purchase plan transactions and
spent $0.3 million less in capital lease payments. Net cash used in financing activities was $5.4 million in fiscal
2009 as compared to $2.6 million in fiscal 2008, a net decrease of $2.9 million as a result of a $1.4 million
decrease from the exercise of stock options and employee stock purchase plan transactions and $1.5 million of
additional cash usage for the repurchase of treasury stock.

We expect positive cash flows from operations and believe that our current cash, cash equivalents and
marketable securities balances, cash generated from operations and our ability to secure debt and/or equity
financing will be sufficient to fund our business operations for the next twelve months and beyond.

The following summarizes our contractual obligations at September 30, 2010:

The operating lease agreements included above primarily relate to office space. The table above does not
include possible payments for uncertain tax positions. Our reserve for uncertain tax positions, including
accrued interest and penalties, was $2.8 million as of September 30, 2010. Due to the nature of the underlying
liabilities and the extended time often needed to resolve income tax uncertainties, we cannot make reliable
estimates of the amount or timing of cash payments that may be required to settle these liabilities.

FOREIGN CURRENCY

We are exposed to foreign currency risk associated with certain sales transactions being denominated in Euros,
British Pounds or Japanese Yen and foreign currency translation risk as the financial position and operating
results of our foreign subsidiaries are translated into U.S. Dollars for consolidation. We have not implemented
a formal hedging strategy to reduce foreign currency risk.

(in thousands)TotalLess than 1 year1-3 years3-5 yearsThereafterOperating leases7,370$ 2,389$ 3,516$ 1,222$ 243$ Deferred payments on acquisition3,000 3,000 - - - Total contractual cash obligations10,370$ 5,389$ 3,516$ 1,222$ 243$ Payments due by fiscal period

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

FOREIGN CURRENCY (CONTINUED)

During 2009 and 2008, we had approximately $75.2 million and $76.1 million, respectively, of net sales to
foreign customers including export sales, of which $33.4 million and $45.7 million, respectively, were
denominated in foreign currency, predominantly the Euro and British Pound in fiscal 2009 and predominantly
the Euro in fiscal 2008. In future periods, a significant portion of sales will continue to be made in Euros and
British Pounds.

During fiscal 2008, we acquired Sarian for $30.9 million, which was partially financed by an intercompany loan
from both Digi International Inc. for $25.0 million and Digi GmbH for $2.9 million. The Digi GmbH
intercompany loan for $2.9 million was paid in March 2009 and the Digi International Inc. $25.0 million loan
was converted to capital on October 1, 2008. The translation adjustments related to the $2.9 million
intercompany loan were recorded in other income, net within our Consolidated Statements of Operations.

RECENT ACCOUNTING DEVELOPMENTS

In March 2010, the FASB (Financial Accounting Standards Board) issued an amendment to the accounting
standards that provides guidance on criteria used to define a milestone and determines when it may be
appropriate to apply the milestone method of revenue recognition for research or development transactions.
Consideration that is contingent upon achievement of a milestone can be recognized in its entirety as revenue in
the period in which the milestone is achieved only if the milestone meets all criteria to be considered
substantive. In addition, certain disclosures related to the milestone method of revenue recognition will be
required. We adopted this provision on October 1, 2010. We do not expect this amendment to have a material
impact on our consolidated financial statements.

In October 2009, the FASB issued an amendment to the accounting standards that provides guidance for
identifying separate deliverables in a revenue-generating transaction where multiple deliverables exist, and for
allocating and recognizing revenue based on those separate deliverables. This guidance is expected to result in
more multiple-deliverable arrangements being separable than under current guidance. This amendment is
effective for revenue arrangements entered into or materially modified in our fiscal year beginning October 1,
2010. We adopted this provision on October 1, 2010. We do not expect this amendment to have a material
impact on our consolidated financial statements.

In October 2009, the FASB issued an amendment to the accounting standards related to certain revenue
arrangements that include software elements. This standard clarifies the existing accounting guidance such that
tangible products that contain both software and non-software components that function together to deliver the
product’s essential functionality shall be excluded from the scope of the software revenue recognition
accounting standards. Accordingly, sales of these products may fall within the scope of other revenue
recognition accounting standards or may now be within the scope of this standard and may require an allocation
of the arrangement consideration for each element of the arrangement. This amendment is effective for revenue
arrangements entered into or materially modified in our fiscal year beginning October 1, 2010. We adopted this
provision on October 1, 2010. We do not expect this amendment to have a material impact on our consolidated
financial statements.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated
financial statements, which have been prepared in accordance with accounting principles generally accepted in
the United States of America. The preparation of these consolidated financial statements requires us to make

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

CRITICAL ACCOUNTING POLICIES AND ESTIMATES (CONTINUED)

estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, the
disclosure of contingent assets and liabilities and the values of purchased assets and assumed liabilities in
acquisitions. We base our estimates on historical experience and various other assumptions that are believed to
be reasonable under the circumstances, the results of which form the basis for making judgments about the
carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may
differ from these estimates.

We believe the following critical accounting policies impact our more significant judgments and estimates used
in the preparation of our consolidated financial statements.

REVENUE RECOGNITION

Our revenues are derived primarily from the sale of embedded and non-embedded products to our distributors
and Direct (end-user) / OEM customers, and to a small extent from the sale of software licenses, fees associated
with technical support, training, professional and engineering services and royalties. We recognize product
revenue when persuasive evidence of an arrangement exists, delivery has occurred, the sales price is fixed or
determinable, collectability is reasonably assured and there are no post-delivery obligations other than warranty.

Under these criteria, product revenue is generally recognized upon shipment of product to customers. Sales to
authorized domestic distributors and Direct / OEMs are made with certain rights of return and price adjustment
provisions. Estimated reserves for future returns and pricing adjustments are established by us based on an
analysis of historical patterns of returns and price adjustments as well as an analysis of authorized returns
compared to received returns, current on-hand inventory at distributors, and distribution sales for the current
period. Estimated reserves for future returns and price adjustments are charged against revenues in the same
period as the corresponding sales are recorded. Material differences between the historical trends used to
determine estimated reserves and actual returns and pricing adjustments could result in a material change to our
consolidated results of operations or financial position. We have applied consistent methodologies for
estimating reserves for future returns and pricing adjustments for all years presented. The reserve for future
returns and pricing adjustments was $1.1 million at both September 30, 2010 and 2009.

We also generate revenue from the sale of software licenses, post-contract customer support, fees associated
with technical support, training, professional and engineering services and royalties. Revenue recognized
resulting from such non-product sales represented 3.3%, 3.0% and 1.2% of net sales in fiscal 2010, 2009 and
2008, respectively. Our software development tools and development boards often include multiple elements,
including hardware, software licenses, post-contract customer support, limited training and basic hardware
design review. Our customers purchase these products and services during their product development process
in which they use the tools to build network connectivity into the devices they are manufacturing. Revenue for
software licenses, professional and engineering services and training is recognized upon performance, which
includes delivery of a final product version and acceptance by the customer. Revenues from contracts with
multiple element arrangements are recognized as each element is earned based on the relative fair value of each
element provided the delivered elements have value to customers on a standalone basis. Amounts allocated to
each element are based on its objectively determined fair value, such as the sales price for the product or service
when it is sold separately.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

CRITICAL ACCOUNTING POLICIES AND ESTIMATES (CONTINUED)

CASH EQUIVALENTS AND MARKETABLE SECURITIES

We regularly monitor and evaluate the realizable value of our marketable securities. When assessing
marketable securities for other-than-temporary declines in value, we consider factors including how significant
the decline in value is as a percentage of the original cost, how long the market value of the investment has been
less than its original cost, the underlying factors contributing to a decline in the prices of securities in a single
asset class, the performance of the issuer’s stock price in relation to the stock price of its competitors within the
industry, expected market volatility, analyst recommendations, the views of external investment managers, any
news or financial information that has been released specific to the investee and the outlook for the overall
industry in which the issuer operates. If events and circumstances indicate that a decline in the value of these
securities has occurred and is other-than-temporary, we would record a charge to other income (expense).

ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS

We maintain an allowance for doubtful accounts, which reflects the estimate of losses that may result from the
inability of some of our customers to make required payments. The estimate for the allowance for doubtful
accounts is based on known circumstances regarding collectability of customer accounts and historical
collections experience. If the financial condition of one or more of our customers were to deteriorate, resulting
in an inability to make payments, additional allowances may be required. Material differences between the
historical trends used to estimate the allowance for doubtful accounts and actual collection experience could
result in a material change to our consolidated results of operations or financial position. The allowance for
doubtful accounts was $0.5 million at September 30, 2010 and $0.6 million at September 30, 2009.

INVENTORIES

Inventories are stated at the lower of cost or fair market value, with cost determined using the first-in, first-out
method. We reduce the carrying value of our inventories for estimated excess and obsolete inventories equal to
the difference between the cost of inventory and its estimated realizable value based upon assumptions about
future product demand and market conditions. Once the new cost basis is established, the value is not increased
with any changes in circumstances that would indicate an increase after the remeasurement. If actual product
demand or market conditions are less favorable than those projected by management, additional inventory
write-downs may be required that could result in a material change to our consolidated results of operations or
financial position. We have applied consistent methodologies for the net realizable value of inventories.

GOODWILL

Goodwill represents the excess of cost over the fair value of identifiable assets acquired. Goodwill is tested for
impairment on an annual basis as of June 30, or more frequently if events or circumstances occur which could
indicate impairment. At June 30, 2010, our market capitalization was below the carrying value of our reporting
unit. However, our market capitalization plus our estimated control premium of 35% resulted in a fair value in
excess of our carrying value and therefore no impairment was indicated. In order for our carrying value to
equal fair value, we would have required approximately a 14% control premium. The control premium
represents the amount an investor would pay, over and above market capitalization, in order to obtain a
controlling interest in a company. The estimated control premium was determined by a review of premiums
paid for similar companies over the past five years. At September 30, 2010, our market capitalization, which is
an indicator of fair value, continued to be below the carrying value of our reporting unit; however, including the
control premium there continued to be no indication of goodwill impairment at September 30, 2010. In order
for our carrying value to equal fair value, we would have required approximately a 1% control premium.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS (CONTINUED)

CRITICAL ACCOUNTING POLICIES AND ESTIMATES (CONTINUED)

INCOME TAXES

We have unrecognized tax benefits of $2.8 million classified as a long-term liability as we do not expect
significant payments to occur over the next 12 months. The total amount of unrecognized tax benefits that if
recognized would affect our effective tax rate is $2.2 million. We recognize interest and penalties related to
income tax matters in income tax expense.

WARRANTIES

In general, we warrant our products to be free from defects in material and workmanship under normal use and
service. The warranty periods range from one to five years from the date of receipt. We have the option to
repair or replace products we deem defective due to material or workmanship. Estimated warranty costs are
accrued in the period that the related revenue is recognized based upon an estimated average per unit repair or
replacement cost applied to the estimated number of units under warranty. These estimates are based upon
historical warranty incidents and are evaluated on an ongoing basis to ensure the adequacy of the warranty
accrual. The product warranty accrual was $0.9 million at September 30, 2010 and $1.0 million at September
30, 2009.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

INTEREST RATE RISK

Our exposure to interest rate risk relates primarily to our investment portfolio. We do not use derivative
financial instruments to hedge against interest rate risk.

FOREIGN CURRENCY RISK

During fiscal 2010, the average monthly exchange rate for the Euro to the U.S. Dollar increased by
approximately 0.2% from 1.3547 to 1.3574, the average monthly exchange rate for the British Pound to the U.S.
Dollar increased approximately 0.5% from 1.5517 to 1.5596 and the average monthly exchange rate for the
Japanese Yen to the U.S. Dollar increased by approximately 6.2% from .0105 to .0112. A 10.0% change from
the 2010 average exchange rate for the Euro, British Pound and Yen to the U.S. Dollar would have resulted in a
1.5% increase or decrease in annual net sales and a 2.0% increase or decrease in stockholders’ equity. The
above analysis does not take into consideration any pricing adjustments we may make in response to changes in
the exchange rate.

CREDIT RISK

We have some exposure to credit risk related to our accounts receivable portfolio. Exposure to credit risk is
controlled through regular monitoring of customer financial status, credit limits and collaboration with sales
management on customer contacts to facilitate payment.

Investments are made in accordance with our investment policy and consist of certificates of deposit, corporate
bonds and government bonds. We may have some exposure related to the fair value of our securities, which
could change significantly based on changes in market conditions. If market conditions deteriorate, we may
incur impairment charges for securities in our investment portfolio.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

REPORT OF INDEPENDENT REGISTERED CERTIFIED PUBLIC ACCOUNTING FIRM

To the Stockholders and Board of Directors of Digi International Inc.:

In our opinion, the accompanying consolidated balance sheets and the related consolidated statements of
operations, of cash flows and of stockholders’ equity and comprehensive income (loss) present fairly, in all
material respects, the financial position of Digi International Inc. and its subsidiaries at September 30, 2010 and
2009, and the results of their operations and their cash flows for each of the three years in the period ended
September 30, 2010 in conformity with accounting principles generally accepted in the United States of
America. In addition, in our opinion, the financial statement schedule listed in the index appearing under Item
15(a)(2) presents fairly, in all material respects, the information set forth therein when read in conjunction with
the related consolidated financial statements. Also in our opinion, the Company maintained, in all material
respects, effective internal control over financial reporting as of September 30, 2010, based on criteria
established in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of
the Treadway Commission (COSO). The Company’s management is responsible for these financial statements
and financial statement schedule, for maintaining effective internal control over financial reporting and for its
assessment of the effectiveness of internal control over financial reporting, included in Management’s Report
on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express
opinions on these financial statements, on the financial statement schedule, and on the Company’s internal
control over financial reporting based on our integrated audits. We conducted our audits in accordance with the
standards of the Public Company Accounting Oversight Board (United States). Those standards require that we
plan and perform the audits to obtain reasonable assurance about whether the financial statements are free of
material misstatement and whether effective internal control over financial reporting was maintained in all
material respects. Our audits of the financial statements included examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and
significant estimates made by management, and evaluating the overall financial statement presentation. Our
audit of internal control over financial reporting included obtaining an understanding of internal control over
financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and
operating effectiveness of internal control based on the assessed risk. Our audits also included performing such
other procedures as we considered necessary in the circumstances. We believe that our audits provide a
reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles. A company’s internal control over financial
reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable
detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (ii) provide
reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in
accordance with generally accepted accounting principles, and that receipts and expenditures of the company
are being made only in accordance with authorizations of management and directors of the company; and
(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or
disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect
misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that
controls may become inadequate because of changes in conditions, or that the degree of compliance with the
policies or procedures may deteriorate.

/s/ PricewaterhouseCoopers LLP
Minneapolis, Minnesota
November 23, 2010

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA (CONTINUED)

DIGI INTERNATIONAL INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per common share data)

For the fiscal years ended September 30,201020092008Net sales 182,548$ 165,928$ 185,056$ Cost of sales (exclusive of amortization of purchased and core technology shown separately below) 86,266 80,470 83,096 Amortization of purchased and core technology 4,073 4,193 4,091 Gross profit92,209 81,265 97,869 Operating expenses: Sales and marketing37,010 35,304 36,879 Research and development27,825 26,381 27,040 General and administrative 17,889 14,557 16,035 Restructuring (benefit) costs(468) 1,953 - Acquired in-process research & development- - 1,900 Total operating expenses82,256 78,195 81,854 Operating income 9,953 3,070 16,015 Other income (expense): Interest income355 1,406 3,579 Interest expense(138) (257) (174) Impairment of marketable security- - (1,015) Other income, net349 63 510 Total other income, net566 1,212 2,900 Income before income taxes 10,519 4,282 18,915 Income tax provision1,578 199 6,564 Net income8,941$ 4,083$ 12,351$ Net income per common share: Basic0.36$ 0.16$ 0.48$ Diluted0.36$ 0.16$ 0.47$ Weighted average common shares, basic24,865 24,901 25,659 Weighted average common shares, diluted25,154 25,183 26,242 The accompanying notes are an integral part of the consolidated financial statements.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA (CONTINUED)

DIGI INTERNATIONAL INC.
CONSOLIDATED BALANCE SHEETS
(in thousands, except share data)

As of September 30,20102009ASSETSCurrent assets:Cash and cash equivalents50,943$ 48,434$ Marketable securities36,634 22,311 Accounts receivable, net24,090 19,032 Inventories26,550 26,619 Deferred tax assets3,344 2,415 Other2,141 3,844 Total current assets143,702 122,655 Marketable securities- 5,063 Property, equipment and improvements, net16,396 16,678 Identifiable intangible assets, net19,851 26,877 Goodwill86,210 86,558 Deferred tax assets320 440 Other486 677 Total assets266,965$ 258,948$ LIABILITIES AND STOCKHOLDERS' EQUITYCurrent liabilities: Accounts payable7,449$ 5,567$ Accrued expenses:Compensation5,850 3,275 Warranty877 970 Other4,507 3,756 Deferred payment on acquisition2,914 2,966 Total current liabilities21,597 16,534 Deferred tax liabilities1,457 4,331 Income taxes payable2,838 4,893 Deferred payment on acquisition- 2,812 Other noncurrent liabilities517 792 Total liabilities26,409 29,362 Commitments and contingencies Stockholders' equity:Preferred stock, $.01 par value; 2,000,000 shares authorized; noneissued and outstanding- - Common stock, $.01 par value; 60,000,000 shares authorized;28,666,311 and 28,409,198 shares issued 287 284 Additional paid-in capital185,427 181,282 Retained earnings91,649 82,708 Accumulated other comprehensive loss(9,589) (6,527) Treasury stock, at cost, 3,584,215 and 3,708,302 shares(27,218) (28,161) Total stockholders' equity240,556 229,586 Total liabilities and stockholders' equity266,965$ 258,948$ The accompanying notes are an integral part of the consolidated financial statements.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA (CONTINUED)

DIGI INTERNATIONAL INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

For the fiscal years ended September 30,201020092008Operating activities: Net income 8,941$ 4,083$ 12,351$ Adjustments to reconcile net income to net cash provided by operating activities: Depreciation of property, equipment and improvements2,649 2,581 2,488 Amortization of identifiable intangible assets and other assets7,484 7,476 6,830 Bad debt/product return (benefit) provision, net 175 (265) 308 Inventory obsolescence848 881 536 Excess tax benefits from stock-based compensation(47) (80) (184) Impairment on marketable security- - 1,015 Stock-based compensation3,371 3,518 3,697 Deferred income taxes, net(3,656) (2,714) (1,624) Restructuring(468) - - Acquired in-process research & development- - 1,900 Other27 (230) (145) Changes in operating assets and liabilities (net of acquisitions): Accounts receivable(6,525) 5,384 (1,838) Inventories(891) 2,695 (3,093) Other assets749 193 96 Income taxes (receivable) payable (1,235) (1,090) 7 Accounts payable1,486 (4,561) 3,322 Accrued expenses 3,187 (2,185) (1,596) Net cash provided by operating activities16,095$ 15,686$ 24,070$ Investing activities: Purchase of marketable securities(38,538) (30,489) (69,196) Proceeds from maturities of marketable securities29,335 62,624 77,857 Proceeds from sale of property and equipment11 10 6,954 Purchase of property, equipment, improvements and certain other intangible assets(2,975) (3,873) (4,425) Increase in restricted cash - non-current- - (392) Contingent purchase price payments related to acquisition- - (1,315) Deferred cash payout for acquisition of business(3,000) - - Acquisition of businesses, net of cash acquired- (2,986) (31,853) Net cash (used in) provided by investing activities(15,167) 25,286 (22,370) Financing activities: Payments on capital lease obligations(9) (336) (361) Borrowing on note payable- - 25,000 Payment on note payable- - (25,000) Purchase of treasury stock- (6,576) (5,104) Proceeds from stock option plan transactions1,672 423 1,699 Proceeds from employee stock purchase plan transactions894 982 1,018 Excess tax benefits from stock-based compensation47 80 184 Net cash provided by (used in) financing activities2,604 (5,427) (2,564) Effect of exchange rates changes on cash and cash equivalents(1,023) (1,287) (3,335) Net increase (decrease) in cash and cash equivalents2,509 34,258 (4,199) Cash and cash equivalents, beginning of period48,434 14,176 18,375 Cash and cash equivalents, end of period50,943$ 48,434$ 14,176$ Supplemental Cash Flows Information: Interest paid159$ 54$ 136$ Income taxes paid, net6,479$ 3,944$ 8,143$ Other non-cash financing and investing items: Deferred payment liability related to acquisition-$ -$ 5,537$ Equipment acquired under capital lease-$ -$ 9$ The accompanying notes are an integral part of the consolidated financial statements.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA (CONTINUED)

DIGI INTERNATIONAL INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY AND COMPREHENSIVE
INCOME (LOSS)
(in thousands)

For the years ended September 30, 2010, 2009 and 2008AccumulatedAdditionalOtherTotal Common StockTreasury StockPaid-InRetainedComprehensiveStockholders' SharesPar ValueSharesValueCapitalEarningsIncomeEquityBalances, September 30, 200728,154 281$ 2,606 (18,435)$ 172,156$ 66,782$ 2,121$ 222,905$ Net income12,351 12,351 Foreign currency translation adjustment(4,018) (4,018) Total comprehensive income8,333 Cumulative effect from adoption of FIN 48(508) (508) Employee stock purchase issuances(117) 848 170 1,018 Purchase of treasury stock471 (5,104) (5,104) Issuance of stock upon exercise of stock options182 2 1,697 1,699 Tax benefit realized upon exercise of stock options(106) (106) Stock-based compensation expense3,697 3,697 Balances, September 30, 200828,336 283 2,960 (22,691) 177,614 78,625 (1,897) 231,934$ Net income4,083 4,083 Foreign currency translation adjustment(4,622) (4,622) Net unrealized (loss) gain on investments (net of related tax effect of $2)(4) (4) Reclassification of gain into net income (net of related tax effect of $3)(4) (4) Total comprehensive loss(547) Employee stock purchase issuances(145) 1,106 (124) 982 Purchase of treasury stock893 (6,576) (6,576) Issuance of stock upon exercise of stock options73 1 422 423 Tax benefit realized upon exercise of stock options(148) (148) Stock-based compensation expense3,518 3,518 Balances, September 30, 200928,409 284 3,708 (28,161) 181,282 82,708 (6,527) 229,586$ Net income8,941 8,941 Foreign currency translation adjustment(3,074) (3,074) Net unrealized gain on investments (net of related tax effect of $22)34 34 Reclassification of gain into net income (net of related tax effect of $14)(22) (22) Total comprehensive income5,879 Employee stock purchase issuances(124) 943 (49) 894 Issuance of stock upon exercise of stock options257 3 1,669 1,672 Tax benefit realized upon exercise of stock options(846) (846) Stock-based compensation expense3,371 3,371 Balances, September 30, 201028,666 287 3,584 (27,218) 185,427 91,649 (9,589) 240,556$ The accompanying notes are an integral part of the consolidated financial statements.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

BUSINESS DESCRIPTION

We are a worldwide leader in device networking for business and make wireless machine-to-machine (M2M)
connectivity easy. We offer high levels of performance, flexibility and quality, and market our products
through a global network of distributors and resellers, systems integrators and original equipment manufacturers
(OEMs). We are heavily focused on four application markets, and we offer solution bundles for energy
monitoring and management, tank monitoring and fleet management.

PRINCIPLES OF CONSOLIDATION

The consolidated financial statements include our accounts and the accounts of our wholly-owned subsidiaries.
All intercompany accounts and transactions have been eliminated in consolidation.

CASH EQUIVALENTS

Cash equivalents consist of money market accounts and other highly liquid investments purchased with an
original maturity of three months or less. The carrying amounts approximate fair value due to the short
maturities of these investments.

MARKETABLE SECURITIES

Marketable securities consist of certificates of deposit, corporate bonds and government municipal bonds.
We changed our policy as of October 1, 2008 to account for our marketable securities as available-for-sale
on a prospective basis. Prior to October 1, 2008 all marketable securities purchased were classified as
held-to-maturity and were carried at amortized cost. All marketable securities purchased after October 1,
2008 are carried at fair value with unrealized gains and losses reported as a separate component of
stockholders’ equity. We obtain quoted market prices and trading activity for each security, where
available, review the financial solvency of each security issuer and obtain other relevant information to
estimate the fair value for each security in our investment portfolio.

We regularly monitor and evaluate the value of our marketable securities. When assessing marketable
securities for other-than-temporary declines in value, we consider factors including how significant the decline
in value is as a percentage of the original cost, how long the market value of the investment has been less than
its original cost, the underlying factors contributing to a decline in the prices of securities in a single asset class,
the performance of the issuer’s stock price in relation to the stock price of its competitors within the industry,
expected market volatility, analyst recommendations, the views of external investment managers, any news or
financial information that has been released specific to the investee and the outlook for the overall industry in
which the issuer operates. If events and circumstances indicate that a decline in the value of a security has
occurred and is other-than-temporary, we would record a charge to other income (expense).

ACCOUNTS RECEIVABLE

Accounts receivable are stated at the amount we expect to collect, which is net of an allowance for doubtful
accounts for estimated losses resulting from the inability of our customers to make required payments. The
following factors are considered when determining the collectability of specific customer accounts: customer
creditworthiness, past transaction history with the customer, and changes in customer payment terms or

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

ACCOUNTS RECEIVABLE (CONTINUED)

practices. In addition, overall historical collection experience, current economic industry trends, and a review
of the current status of trade accounts receivable are considered when determining the required allowance for
doubtful accounts. Based on our assessment, we provide for estimated uncollectible amounts through a charge
to earnings and a credit to our allowance for doubtful accounts. Balances that remain outstanding after we have
used reasonable collection efforts are written off through a charge to the allowance for doubtful accounts and a
credit to accounts receivable.

INVENTORIES

Inventories are stated at the lower of cost or fair market value, with cost determined using the first-in, first-out
method. Appropriate consideration is given to deterioration, obsolescence and other factors in evaluating fair
market value.

PROPERTY, EQUIPMENT AND IMPROVEMENTS, NET

Property, equipment and improvements are carried at cost, net of accumulated depreciation. Depreciation is
provided by charges to operations using the straight-line method over the estimated asset useful lives. Furniture
and fixtures and other equipment are depreciated over a period of three to five years. Building improvements
and buildings are depreciated over ten and thirty-nine years, respectively. Equipment under capital lease is
depreciated over the lease term. We own and occupy two buildings located in Minnetonka and Eden Prairie,
Minnesota.

Expenditures for maintenance and repairs are charged to operations as incurred, while major renewals and
betterments are capitalized. The assets and related accumulated depreciation accounts are adjusted for asset
retirements and disposals with the resulting gain or loss included in operations.

IDENTIFIABLE INTANGIBLE ASSETS

Purchased proven technology, license agreements, covenants not to compete and other identifiable intangible
assets are recorded at fair value when acquired in a business acquisition, or at cost when not purchased in a
business acquisition. Purchased in-process research and development costs (IPR&D) were previously expensed
upon consummation of the related business acquisition. Effective October 1, 2009 in-process research and
development costs are capitalized according to authoritative guidance issued by FASB related to business
combinations. We have not yet incurred any capitalized in-process research and development. All other
identifiable intangible assets are amortized on either a straight-line basis over their estimated useful lives of
three to thirteen years or based on the pattern in which the asset is consumed. Useful lives for identifiable
intangible assets are estimated at the time of acquisition based on the periods of time from which we expect to
derive benefits from the identifiable intangible assets. Amortization of purchased and core technology is
presented as a separate component of cost of sales in the Consolidated Statements of Operations. Amortization
of all other acquired identifiable intangible assets is charged to operating expense as a component of general
and administrative expense.

Identifiable intangible assets are reviewed for impairment whenever events or circumstances indicate that
undiscounted expected future cash flows are not sufficient to recover the carrying value amount. We measure
impairment loss by utilizing an undiscounted cash flow valuation technique using fair values indicated by the
income approach. Impairment losses, if any, would be recorded in the period the impairment is identified. No
impairments were identified during fiscal 2010, 2009 or 2008.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

GOODWILL

Goodwill represents the excess of cost over the fair value of identifiable assets acquired. Goodwill is tested for
impairment on an annual basis as of June 30, or more frequently if events or circumstances occur which could
indicate impairment. At June 30, 2010, our market capitalization was below the carrying value of our reporting
unit. However, our market capitalization plus our estimated control premium of 35% resulted in a fair value in
excess of our carrying value and therefore no impairment was indicated. In order for our carrying value to
equal fair value, we would have required approximately a 14% control premium. The control premium
represents the amount an investor would pay over and above market capitalization in order to obtain a
controlling interest in a company. The estimated control premium was determined by a review of premiums
paid for similar companies over the past five years.

In order to compute the control premium, three methodologies were used, including (1) analyzing individual
transactions within our industry, (2) analyzing industry-wide data, and (3) analyzing global transaction data.
Individual transactions in the Communication Equipment and Computer & Peripherals industries were used to
find transactions of target companies that operated in similar markets and shared similar operating
characteristics with Digi. Transaction screening criteria included selection of transactions with the following
characteristics:

At least 50 percent of a target company’s equity sought by an acquirer,
Target company considered operating (not in bankruptcy),
Target company had publicly traded stock outstanding at the transaction date, and
Transactions announced between June 30, 2006 and the valuation date.

In analyzing industry-wide data, transactions in three industries were identified that encompassed the products
offered by us: Office Equipment and Computer Hardware, Communications, and Computer, Supplies and
Services. Finally, control premiums were considered for both domestic and international transactions.

Using the data from the above analyses, an overall range of control premiums was identified as of the June 30,
2009 valuation date and resulted in a concluded range of control premium of 25 percent to 35 percent as of June
30, 2009. The control premium percentage that was used in estimating the fair value of our reporting unit was
35 percent at our June 30, 2009 annual goodwill impairment assessment. A review of historical control
premiums paid indicated that control premiums were generally higher during economic downturns, when selling
prices of target companies were likely undervalued, and acquirers were willing to pay higher control premiums.
We concluded that the high end of the range of control premiums best represented the amount an investor would
pay, over and above market capitalization, in order to obtain a controlling interest given the current economic
conditions. If we had selected the low end of the range of control premiums, our fair value would still have
exceeded our carrying value for purposes of the annual goodwill impairment assessment at June 30, 2009.
Based on our industry knowledge and discussions with an independent third party valuation firm in June 2010,
we concluded that the control premium study that was performed in conjunction with our annual goodwill
impairment assessment on June 30, 2009 remained valid for June 30, 2010 and that the 35 percent control
premium used in our prior year’s assessment continued to best represent the amount an investor would pay, over
and above market capitalization, in order to obtain a controlling interest given the current economic conditions.

At September 30, 2010, our market capitalization, which is an indicator of fair value, continued to be below the
carrying value of our reporting unit; however, with the control premium there continued to be no indication of
goodwill impairment at September 30, 2010. In order for our carrying value to equal fair value, we would have
required approximately a 1% control premium.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

GOODWILL (CONTINUED)

Based on our annual goodwill impairment assessment on June 30, 2009, we concluded that the fair value of our
reporting unit exceeded the carrying amount and, therefore, no potential goodwill impairment was indicated.

We have defined the criteria that will result in additional interim goodwill impairment testing. If these
criteria are met, we will undertake an analysis to determine whether a goodwill impairment has occurred,
which could have a material effect on our consolidated financial position and results of operations. The
evaluation of asset impairment may require us to make assumptions about future cash flows and revenues.
These assumptions require significant judgment and actual results may differ from assumed or estimated
amounts. If these estimates and assumptions change, we may be required to recognize impairment losses
in the future.

REVENUE RECOGNITION

We recognize revenue in accordance with authoritative guidance issued by FASB related to revenue
recognition. We reclassified fiscal 2009 and 2008 Spectrum design services revenue from product sales to non-
product sales to conform to the current year presentation.

Revenue recognized for product sales was 96.7%, 97.0% and 98.8% in fiscal 2010, 2009 and 2008,
respectively. We recognize product revenue when persuasive evidence of an arrangement exists, delivery has
occurred, the sales price is fixed or determinable, collectability is reasonably assured and there are no post-
delivery obligations, other than warranty. Under these criteria, product revenue is generally recognized upon
shipment of product to customers, including Direct (end-user) / OEMs and distributors. Sales to authorized
domestic distributors and Direct / OEMs are made with certain rights of return and price adjustment provisions.
Estimated reserves for future returns and pricing adjustments are established by us based on an analysis of
historical patterns of returns and price adjustments as well as an analysis of authorized returns compared to
received returns, current on-hand inventory at distributors, and distribution sales for the current period.
Estimated reserves for future returns and price adjustments are charged against revenues in the same period as
the corresponding sales are recorded.

We also generate revenue from the sale of software licenses, post-contract customer support, fees associated
with technical support, training, professional and engineering services, and royalties. Revenue recognized
resulting from such non-product sales represented 3.3%, 3.0%, and 1.2% of net sales in fiscal 2010, 2009 and
2008, respectively. Our software development tools and development boards often include multiple elements,
including hardware, software licenses, post-contract customer support, limited training and basic hardware
design review. Our customers purchase these products and services during their product development process
in which they use the tools to build network connectivity into the devices they are manufacturing. Revenue for
software licenses, professional and engineering services and training is recognized upon performance, which
includes delivery of a final product version and acceptance by the customer. For post-contract customer support
and fees associated with technical support, revenue is deferred and recognized over the life of the contract as
service is performed. Royalty revenue is recognized when cash is received from the customer. Unearned post-
contract customer support and unearned nonrecurring engineering services revenue is included in deferred
revenue on the balance sheet.

RESEARCH AND DEVELOPMENT

Research and development costs are expensed when incurred. Research and development costs include
compensation, allocation of corporate costs, depreciation, utilities, professional services and prototypes.
Software development costs are expensed as incurred until the point that technological feasibility and proven

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

marketability of the product are established. To date, the time period between the establishment of
technological feasibility and completion of software development has been short, and no significant
development costs have been incurred during that period. Accordingly, we have not capitalized any software
development costs to date.

INCOME TAXES

Deferred income taxes are recognized for the tax consequences in future years of differences between the tax
basis of assets and liabilities and their financial reporting amounts at each year end based on enacted tax laws
and statutory tax rates applicable to the periods in which the differences are expected to affect taxable income.
Income tax expense is equal to the tax payable for the period and the change during the period in deferred tax
assets and liabilities and also changes in income tax reserves.

NET INCOME PER COMMON SHARE

Basic net income per common share is calculated based on the weighted average number of common shares
outstanding during the period. Diluted net income per common share is computed by dividing net income by
the weighted average number of common and common equivalent shares outstanding during the period. Our
only potentially dilutive common shares are those that result from dilutive common stock options and shares
purchased through the employee stock purchase plan.

The following table is a reconciliation of the numerators and denominators in the net income per common share
calculations (in thousands, except per common share data):

We use the treasury stock method to calculate the weighted-average shares used in the diluted earnings per
share computation. Under the treasury stock method, the proceeds from exercise of an option, the amount of
compensation cost, if any, for future service that we have not yet recognized, and the amount of estimated tax
benefits that would be recorded in paid-in capital, if any, when the option is exercised are assumed to be used to
repurchase shares in the current period.

Stock options to purchase 2,493,261, 3,109,829 and 2,336,693 common shares at September 30, 2010, 2009 and
2008, respectively, were not included in the computation of diluted earnings per common share because the
options’ exercise prices were greater than the average market price of common shares and, therefore, their effect
would be antidilutive.

Years ended September 30,201020092008Numerator: Net income 8,941$ 4,083$ 12,351$ Denominator: Denominator for basic net income per common share - weighted average shares outstanding24,865 24,901 25,659 Effect of dilutive securities: Employee stock options and employee stock purchase plan289 282 583 Denominator for diluted net income per common share - adjusted weighted average shares25,154 25,183 26,242 Basic net income per common share0.36$ 0.16$ 0.48$ Diluted net income per common share0.36$ 0.16$ 0.47$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)

STOCK-BASED COMPENSATION

Stock-based compensation expense represents the cost of employee services received in exchange for an
award of equity instruments based on the grant date fair value of the award. This cost must be recognized
over the period during which an employee is required to provide the service (usually the vesting period).

FOREIGN CURRENCY TRANSLATION

Financial position and results of operations of our international subsidiaries are measured using local currencies
as the functional currency, except for our Singapore location which uses the U.S. Dollar as its local currency.
Assets and liabilities of these operations are translated at the exchange rates in effect at the end of each
reporting period. Statements of operations accounts are translated at the weighted average rates of exchange
prevailing during each reporting period. Translation adjustments arising from the use of differing currency
exchange rates from period to period are included in accumulated other comprehensive income (loss) in
stockholders’ equity. Gains and losses on foreign currency exchange transactions, as well as translation gains
or losses on transactions denominated in currencies other than an entity’s functional currency are reflected in
the statement of operations. Net transaction gains and losses are recorded to other income (expense) and
amounted to $0.3 million, $0.1 million and $0.5 million for fiscal 2010, 2009 and 2008, respectively. We have
not implemented a formal hedging strategy to reduce the risk of foreign currency translation exposures.

USE OF ESTIMATES AND RISKS AND UNCERTAINTIES

The preparation of consolidated financial statements in conformity with generally accepted accounting
principles in the United States requires management to make estimates and assumptions that affect the reported
amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the reporting period. Actual results could
differ from those estimates.

RECLASSIFICATIONS

Certain prior year amounts have been reclassified to conform to fiscal year 2010 presentation. These
reclassifications had no impact on our consolidated net sales or our consolidated net income.

COMPREHENSIVE INCOME (LOSS)

Our comprehensive income (loss) is comprised of net income, foreign currency translation adjustments and
unrealized gains and losses on available-for-sale marketable securities, which are charged or credited to the
accumulated other comprehensive income (loss) account in stockholders’ equity.

RECENT ACCOUNTING DEVELOPMENTS

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

RECENT ACCOUNTING DEVELOPMENTS (CONTINUED)

2. ACQUISITIONS

MobiApps Holdings Private Limited
On June 8, 2009, we acquired substantially all the assets of MobiApps Holdings Private Limited (“MobiApps”),
a developer of machine-to-machine (“M2M”) communications technology focusing on satellite, cellular, and
hybrid satellite/cellular solutions. MobiApps has locations in India, Singapore and in the U.S. Pursuant to the
terms of the asset purchase agreements, Digi International acquired the U.S. assets located in Herndon, Virginia.
In addition, we established Digi Wireless Singapore Pte. Ltd. and Digi m2m Solutions India Private Limited,
which acquired the assets of MobiApps’ affiliate companies, located in Singapore and India, respectively. The
acquisition was a cash transaction for $3.0 million. At September 30, 2010, it has been determined that certain
performance milestones were not achieved; therefore the contingent payment of $0.5 million is not payable.

We have determined that the MobiApps acquisition is not material to our consolidated results of operations or
financial position. Therefore, pro forma financial information is not presented.

Sarian Systems, Ltd.
On April 28, 2008, we acquired Sarian Systems, Ltd. (“Sarian”). Prior to the acquisition, Sarian was a
privately held corporation located in the United Kingdom. The total purchase price of $30.9 million was
for all of the outstanding ordinary shares of Sarian.

The purchase price was allocated to the estimated fair value of assets acquired and liabilities assumed. The
purchase price allocation resulted in non-deductible goodwill of $15.4 million and a charge of $1.9 million
for acquired in-process research and development. We believe that the acquisition resulted in the
recognition of goodwill primarily because Sarian’s wireless IP-based routing capability is highly
complementary to our market approach and significantly expands our wireless offering.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

2. ACQUISITIONS (CONTINUED)

The following unaudited pro forma condensed consolidated results of operations have been prepared as if the
acquisition of Sarian had occurred as of the beginning of the period presented (in thousands, except per
common share amounts). Pro forma adjustments include amortization of identifiable intangible assets and the
$1.9 million charge related to acquired in-process research and development associated with the Sarian
acquisition.

The unaudited pro forma condensed consolidated results of operations is not necessarily indicative of results
that would have occurred had the Sarian acquisition occurred as of the beginning of the period presented above,
nor is it necessarily indicative of the results that will be obtained in the future.

Spectrum Design Solutions, Inc.
On July 23, 2008, we acquired Spectrum Design Solutions, Inc. (“Spectrum”), which is a wholly owned
subsidiary of Digi International Inc. Prior to the acquisition, Spectrum was a privately held Minneapolis-based
corporation and performed wireless design services. The acquisition was a cash merger for $10.0 million of
which $4.0 million was paid on the acquisition date, $3.0 million was paid in January 2010, and the remaining
$3.0 million will be paid in July 2011. The remaining deferred payment of $3.0 million is recorded as a liability
on our consolidated balance sheet at its current net present value of $2.9 million, on which interest is accrued up
until the time of payment.

We determined that the Spectrum acquisition was not material to our consolidated results of operations or
financial condition. Therefore, pro forma financial information is not presented.

Net sales192,734$ Net income11,537$ Net income per common share, basic0.45$ Net income per common share, diluted0.44$ Year endedSeptember 30, 2008

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

3. GOODWILL AND OTHER IDENTIFIABLE INTANGIBLE ASSETS, NET

Identifiable Intangible Assets, net
Amortized identifiable intangible assets, net as of September 30, 2010 and 2009 are comprised of the following
(in thousands):

Amortization expense for fiscal years 2010, 2009 and 2008 is as follows (in thousands):

Estimated amortization expense for the next five years is as follows (in thousands):

Goodwill
The changes in the carrying amount of goodwill for fiscal 2010 and 2009 are as follows (in thousands):

As of September 30, 2010As of September 30, 2009Gross Gross carryingAccumulatedcarryingAccumulatedamountamortizationNetamountamortizationNetPurchased and core technology46,484$ (38,917)$ 7,567$ 46,583$ (34,893)$ 11,690$ License agreements2,840 (2,537) 303 2,840 (2,464) 376 Patents and trademarks9,753 (6,522) 3,231 9,292 (5,536) 3,756 Customer maintenance contracts700 (604) 96 700 (534) 166 Customer relationships17,481 (9,096) 8,385 17,607 (7,334) 10,273 Non-compete agreements1,039 (770) 269 1,041 (425) 616 Total78,297$ (58,446)$ 19,851$ 78,063$ (51,186)$ 26,877$ Fiscal yearTotal20107,484$ 20097,476$ 20086,830$ Fiscal yearTotal20116,358$ 20124,467$ 20133,432$ 20142,784$ 20151,304$ 20102009Beginning balance, October 186,558$ 86,578$ Acquisition of MobiApps- 1,701 Currency translation adjustments(348) (1,721) Ending balance, September 3086,210$ 86,558$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

4. SEGMENT INFORMATION AND MAJOR CUSTOMERS

We have a single operating and reporting segment. Our revenues consist of products that are in non-
embedded and embedded product categories. Non-embedded products are connected externally to a
device or larger system to provide wired or wireless network connectivity or port expansion, while
embedded products are used by a product developer to build an electronic device in which the product
provides processing power, wired Ethernet, or wireless network connectivity to that device. The products
included in the non-embedded product category include cellular routers, gateways, wireless
communication adapters, console and serial servers, USB connected products and serial cards. The
products included in the embedded product category include modules, chips, software and development
tools, design services, satellite and single-board computers. The following table provides revenue by
product categories (in thousands):

The information in the following table provides revenue by the geographic location of the customer for the
years ended September 30, 2010, 2009 and 2008 (in thousands):

Net property, equipment and improvements by geographic location is as follows (in thousands):

Our U.S. export sales comprised 34.1%, 32.5% and 34.8% of net sales for the years ended September 30, 2010,
2009 and 2008, respectively.

We had one customer whose accounts receivable balance comprised 10.2% of total accounts receivable at
September 30, 2009 for which multiple payments were in transit and received within three business days of
September 30, 2009. No single customer exceeded 10% of accounts receivable or sales for any other period
presented.

201020092008Non-embedded100,146$ 91,262$ 98,442$ Embedded82,402 74,666 86,614 Total net sales182,548$ 165,928$ 185,056$ Year ended September 30,Year ended September 30,201020092008North America107,347$ 90,708$ 107,336$ Europe, Middle East & Africa47,698 56,018 52,956 Asia countries22,742 15,578 19,672 Latin America4,761 3,624 5,092 Total net sales182,548$ 165,928$ 185,056$ As of September 30,201020092008United States15,015$ 15,324$ 14,920$ International, primarily Europe1,381 1,354 1,335 Total net property, equipment and improvements16,396$ 16,678$ 16,255$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

5. SELECTED BALANCE SHEET DATA

6. MARKETABLE SECURITIES

Our marketable securities consist of certificates of deposit, corporate bonds and government municipal
bonds. Prior to October 1, 2008, all marketable securities were classified as held-to-maturity and carried at
amortized cost, except for a bond issued by Lehman Brothers (the Lehman Brothers Bond), which was
carried at expected realizable value due to an other-than-temporary impairment recorded during the fourth
quarter of fiscal 2008. We changed our policy as of October 1, 2008 to account for our marketable
securities as available-for-sale on a prospective basis with unrealized gains and losses reported as a
separate component of stockholders’ equity. In addition, we reclassified the Lehman Brothers Bond as
available-for-sale and sold this bond in fiscal 2009 and 2010, as discussed further below.

We analyze our available-for-sale investments for impairment on an ongoing basis. We consider factors in
determining whether an unrealized loss is a temporary loss or an other-than-temporary loss such as: (a) whether
we have the intent to sell the security or (b) whether it is more likely than not that we will be required to sell the
security before its anticipated recovery. We also consider factors such as the length of time and extent to which
the securities have been in an unrealized loss position and the trend of any unrealized losses. During the fourth
quarter of fiscal 2008, we recorded an other-than-temporary impairment of $1,014,900 on the Lehman Brothers
Bond with a par amount of $1,194,000. The resulting value of $179,100 for the security became its new cost

As of September 30, (in thousands)20102009Accounts receivable, net: Accounts receivable24,639$ 19,656$ Less allowance for doubtful accounts549 624 24,090$ 19,032$ Inventories:Raw materials21,678$ 21,359$ Work in process418 452 Finished goods4,454 4,808 26,550$ 26,619$ Property, equipment and improvements, net:Land1,800$ 1,800$ Buildings10,522 10,522 Improvements3,904 3,542 Equipment *12,625 11,194 Purchased software11,157 10,788 Furniture and fixtures2,886 3,002 42,894 40,848 Less accumulated depreciation and amortization26,498 24,170 16,396$ 16,678$ Other accrued expenses:Deferred revenue266$ 50$ Accrued professional fees838 696 Deferred gain on building sale - short-term289 276 Income taxes payable564 - Deferred income tax liability - current82 48 Restructuring73 721 Other accrued expenses2,395 1,965 4,507$ 3,756$ * Included in equipment is an immaterial amount under capital leases at September 30, 2010.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

6. MARKETABLE SECURITIES (CONTINUED)

basis as of September 30, 2008. This other-than-temporary impairment reflected the estimated decline in the
value of this security precipitated by the bankruptcy of the security’s issuer and was considered a credit loss and
thus would remain in retained earnings. The impairment charge was recorded as a temporary tax difference
as we had sufficient capital gains in the available carryback years to utilize the capital loss that would be
realized when the bond is sold. We sold a portion of the bond in fiscal 2009. The remaining value of the
Lehman Brothers Bond as of September 30, 2009 was $134,100. We sold the remainder of the bond in January
2010 for $169,860 and recognized a gain of $35,760 on this sale during the second quarter of fiscal 2010,
reflecting the difference between the remaining value and the selling price.

We obtain quoted market prices and trading activity for each security, where available, and review the financial
solvency of each security issuer and obtain other relevant information from our investment advisors to estimate
the fair value for each security in our investment portfolio. As of September 30, 2010, eleven of our securities
were trading below our amortized cost basis. We determined each decline in value to be temporary based upon
the factors described above. We expect to realize the fair value of these securities, plus accrued interest, either
at the time of maturity or when the security is sold.

All of our current holdings are classified as available-for-sale marketable securities and are recorded at fair
value on our balance sheet with the unrealized gains and losses recorded in accumulated other comprehensive
income (loss). Our marketable securities at September 30, 2010 were comprised of the following (in
thousands):

Our marketable securities at September 30, 2009 were comprised of the following (in thousands):

Amortized Unrealized Unrealized Cost (1) Gains Losses (2) Fair Value (1) Current marketable securities:Corporate bonds $ 26,163 $ 7 $ (9) $ 26,161 Certificates of deposit 5,001 6 - 5,007 Government municipal bonds 5,463 5 (2) 5,466 Current marketable securities $ 36,627 $ 18 $ (11) $ 36,634 (1) Included in amortized cost and fair value is purchased and accrued interest of $451.(2) The aggregate related fair value of securities with unrealized losses as of September 30, 2010 was $18,909. Amortized Unrealized Unrealized Cost (1) Gains Losses (3) Fair Value (1) Current marketable securities:Corporate bonds (2) $ 4,236 $ 18 $ - $ 4,254 Certificates of deposit 10,022 4 (1) 10,025 Government municipal bonds 8,023 11 (2) 8,032 Current marketable securities 22,281 33 (3) 22,311 Non-current marketable securities:Corporate bonds 5,107 - (44) 5,063 Total marketable securities $ 27,388 $ 33 $ (47) $ 27,374 (1) Included in amortized cost and fair value is purchased and accrued interest of $264.(2) The remaining portion of the Lehman Brothers Bond is included in amortized cost at a fair value of $134.(3) The aggregate related fair value of securities with unrealized losses as of September 30, 2009 was $9,009.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

7. FAIR VALUE MEASUREMENTS

Fair value is defined as the exit price, or the amount that would be received to sell an asset or paid to transfer a
liability in an orderly transaction between market participants as of the measurement date. This standard also
establishes a hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and
minimizes the use of unobservable inputs by requiring that the most observable inputs be used when available.
Observable inputs are inputs market participants would use in valuing the asset or liability based on market data
obtained from independent sources. Unobservable inputs are inputs that reflect our assumptions about the
factors market participants would use in valuing the asset or liability based upon the best information available
in the circumstances. The categorization of financial assets and liabilities within the valuation hierarchy is
based upon the lowest level of input that is significant to the fair value measurement.

The hierarchy is broken down into three levels defined as follows:

•

Level 1 - Inputs are quoted prices in active markets for identical assets or liabilities.

Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices
for identical or similar assets or liabilities in markets that are not active, and inputs (other than
quoted prices) that are observable for the asset or liability, either directly or indirectly.

Level 3 - Inputs are unobservable for the asset or liability and their fair values are determined using
pricing models, discounted cash flow methodologies or similar techniques and at least one
significant model assumption or input is unobservable. Level 3 also may include certain investment
securities for which there is limited market activity or a decrease in the observability of market
pricing for the investments, such that the determination of fair value requires significant judgment or
estimation.

Assets and Liabilities that are Measured at Fair Value on a Recurring Basis
Fair value is applied to financial assets, such as certificates of deposit, corporate bonds and government
municipal bonds, which are classified and accounted for as available-for-sale. These items are stated at fair
value at each reporting period; however, the definition of fair value is now applied using the above guidance.

The following tables provide information by level for financial assets that are measured at fair value on a
recurring basis (in thousands):

Total carryingQuoted price in Significant otherSignificant value at active markets observable inputsunobservable inputsSeptember 30, 2010 (Level 1) (Level 2) (Level 3)Cash equivalents:Money market $ 29,416 $ 29,416 $ - $ - Available-for-sale marketable securities: Corporate bonds 26,161 - 26,161 - Certificates of deposit 5,007 - 5,007 - Government municipal bonds 5,466 - 5,466 - Total cash equivalents and marketablesecurities measured at fair value $ 66,050 $ 29,416 $ 36,634 $ - Fair Value Measurements at September 30, 2010 using:

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

7. FAIR VALUE MEASUREMENTS (CONTINUED)

Cash equivalents are measured at fair value using quoted market prices in active markets for identical assets.
We value our Level 2 assets using inputs that are based on market indices of similar assets within an active
market. We have no financial assets valued with Level 3 inputs as of September 30, 2010 nor have we
purchased or sold any Level 3 financial assets during the three months ended September 30, 2010.

During fiscal 2010, we reclassified $27.2 million of investments at September 30, 2009 from Level 1 to Level 2.
It was determined that the fair value of such investments is based off of indices and matrices for similar assets,
as defined within Level 2 valuation techniques, and not identical assets, as defined within Level 1 valuation
techniques. Our policy for determining when to recognize transfers between levels is based on the actual date of
the event or change in circumstances that caused the transfer. This transfer had no impact on the fair value of
our investments as stated in any of the periods presented. There were no other transfers during fiscal 2010.

The following table provides a reconciliation of the beginning and ending balances during fiscal 2010 of items
measured at fair value on a recurring basis that used significant unobservable inputs (Level 3) in thousands:

The use of different assumptions, applying different judgment to inherently subjective matters and changes in
future market conditions could result in significantly different estimates of fair value of our securities, currently
and in the future. If market conditions deteriorate, we may incur impairment charges for securities in our
investment portfolio.

8. FINANCIAL GUARANTEES

In general, we warrant our products to be free from defects in material and workmanship under normal use and
service. The warranty periods range from one to five years from the date of receipt. We have the option to
repair or replace products we deem defective with regard to material or workmanship. Estimated warranty costs
are accrued in the period that the related revenue is recognized based upon an estimated average per unit repair
or replacement cost applied to the estimated number of units under warranty. These estimates are based upon
historical warranty incidents and are evaluated on an ongoing basis to ensure the adequacy of the warranty

Total carryingQuoted price in Significant otherSignificant value at active markets observable inputsunobservable inputsSeptember 30, 2009 (Level 1) (Level 2) (Level 3)Cash equivalents:Money market $ 33,588 $ 33,588 $ - $ - Available-for-sale marketable securities: Corporate bonds 9,317 - 9,183 134 Certificates of deposit 10,025 - 10,025 - Government municipal bonds 8,032 - 8,032 - Total cash equivalents and marketablesecurities measured at fair value $ 60,962 $ 33,588 $ 27,240 $ 134 Fair Value Measurements at September 30, 2009 Using:Balance at September 30, 2009 $ 134 Realized gain recorded in other income (expense) 36 Sale of security (170)Balance at September 30, 2010 $ -

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

8. FINANCIAL GUARANTEES (CONTINUED)

accrual. The following table summarizes the activity associated with the product warranty accrual for the years
ended September 30, 2010, 2009 and 2008 (in thousands):

We are not responsible and do not warrant that customer software versions created by original equipment
manufacturer (OEM) customers based upon our software source code will function in a particular way, conform
to any specifications, or are fit for any particular purpose and we do not indemnify these customers from any
third-party liability as it relates to or arises from any customization or modifications made by the OEM
customer.

9. RESTRUCTURING

On April 23, 2009, we announced a business restructuring to increase our focus on wireless products and
solutions that include hardware, software and services. The restructuring included the closing of an engineering
facility in Long Beach, California, and the relocation and consolidation of the manufacturing facility in Davis,
California to our Minnetonka, Minnesota headquarters. We paid a lease cancellation fee for one of the leased
facilities in Davis and had vacated the facility as of the end of fiscal 2009. We continue to maintain non-
manufacturing activities at the remaining leased facility in Davis, California. As a result of these initiatives,
during the third quarter of fiscal 2009 we recorded a $2.0 million charge, which consisted of $1.8 million for
employee termination costs for 86 positions and $0.2 million for contract termination fees and other relocation
costs.

All of the 86 positions were vacated in fiscal 2009. The employee termination costs included severance and the
associated costs of continued medical benefits and outplacement services. The other restructuring expenses
included contract termination fees for non-renewal of lease terms relating to one of the facilities in Davis,
California and relocation expenses for employees. A summary of the restructuring charges and other activity
within the restructuring accrual is listed below (in thousands):

The remaining liability is mostly related to continued medical benefits as part of the American Recovery and
Reinvestment Act of 2009 (ARRA), which provides for premium reductions for health benefits under the
Consolidated Omnibus Budget Reconciliation Act of 1985 (COBRA). The ARRA was amended by the
Department of Defense Appropriations Act of 2010 on December 19, 2009, which provided an additional six
months (from nine to fifteen months) for receiving the subsidy. We recorded an additional accrual of $0.1
million for the additional six months of continued medical benefits during the three months ended

FiscalBalance atWarrantiesSettlementsBalance atyearOctober 1,issuedmadeSeptember 30,2010970$ 738$ (831)$ 877$ 20091,214$ 612$ (856)$ 970$ 20081,155$ 979$ (920)$ 1,214$ EmployeeTermination CostsOtherTotalBalance at September 30, 2008-$ -$ -$ Restructuring charge1,766 187 1,953 Payments(1,146) (86) (1,232) Balance at September 30, 2009620$ 101$ 721$ Restructuring charge75 - 75 Payments(244) (11) (255) Reversal(438) (30) (468) Balance at September 30, 201013$ 60$ 73$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

9. RESTRUCTURING (CONTINUED)

December 31, 2009. During fiscal 2010, we eliminated $0.5 million of the restructuring accrual since costs
associated with continued medical benefits and relocation were lower than expected. We expect the remaining
liability to be settled by the end of the second quarter of fiscal 2011.

10. INCOME TAXES

The components of income before income taxes are as follows (in thousands):

The components of the income tax provision are as follows (in thousands):

The net deferred tax asset (liability) at September 30 consists of the following (in thousands):

As of September 30, 2010, we have domestic tax credit carryforwards of $0.2 million the majority of which will
expire in 2013. We also have foreign tax credit carryforwards at September 30, 2010 of $0.1 million, the
majority of which will expire in 2013.

201020092008United States7,080$ 1,582$ 16,648$ International3,439 2,700 2,267 10,519$ 4,282$ 18,915$ For the years ended September 30,201020092008Current: Federal3,072$ 1,160$ 6,654$ State327 292 622 Foreign1,835 1,461 912 Deferred: U.S.(3,052) (1,829) (1,983) Foreign(604) (885) 359 1,578$ 199$ 6,564$ For the years ended September 30,20102009Current deferred tax assets3,344$ 2,415$ Non-current deferred tax asset320 440 Current deferred tax liability(82) (48) Non-current deferred tax liability(1,457) (4,331) Net deferred tax asset (liability)2,125$ (1,524)$ 20102009Uncollectible accounts and other reserves2,387$ 2,030$ Depreciation and amortization654 567 Inventories856 165 Compensation costs3,323 2,999 Tax credit carryforwards297 329 Identifiable intangible assets(5,392) (7,614) Net deferred tax asset (liability)2,125$ (1,524)$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

10. INCOME TAXES (CONTINUED)

We have concluded that it is more likely than not that our deferred tax assets will be realized based on future
projected taxable income and the anticipated future reversal of deferred tax liabilities. The amount of the
deferred tax assets actually realized, however, could vary if there are differences in the timing or amount of
future reversals of existing deferred tax liabilities or changes in the amounts of future taxable income. If our
future taxable income projections are not realized, a valuation allowance may be required, and would be
reflected as income tax expense at the time that any such change in future taxable income is determined.

The reconciliation of the statutory federal income tax rate to our effective income tax rate for the years ended
September 30 is as follows:

All of our unrecognized tax benefits are classified as a long-term liability as we do not expect significant
payments or receipts to occur over the next 12 months. A reconciliation of the beginning and ending amount of
unrecognized tax benefits is as follows (in thousands):

The total amount of unrecognized tax benefits that if recognized would affect the effective tax rate is
$2.2 million.

We recognize interest and penalties related to income tax matters in income tax expense. During fiscal year
ended September 30, 2010 we recorded a benefit of $0.1 million and in fiscal years ended September 30, 2009
and 2008, we recorded an expense of less than $0.1 million and $0.1 million, respectively, of interest and
penalties related to income tax matters in the provision for income taxes. As of September 30, 2010 and 2009
we have accrued interest and penalties related to unrecognized tax benefits of $0.6 million and $0.8 million,
respectively, included in long-term income taxes payable on our consolidated balance sheet.

201020092008Unrecognized tax benefits at beginning of fiscal year4,146$ 3,652$ 3,464$ Increases related to: Prior year income tax positions36 200 27 Current year income tax positions195 838 471 Decreases related to: Prior year income tax positions- - (32) Settlements(1,740) (94) - Expiration of the statute of limitations(372) (450) (278) Unrecognized tax benefits at end of fiscal year2,265$ 4,146$ 3,652$ Fiscal year ended September 30,201020092008Statutory income tax rate35.0 %34.0 %35.0 %Increase (decrease) resulting from: State taxes, net of federal benefits1.1 1.8 0.2 Utilization of tax credits(0.7) (15.6) (2.0) Manufacturing deduction (2.9) (2.9) (2.6) Foreign taxes(0.3) (9.0) (0.1) Research and development credit related to 2008- (13.3) - Acquired in-process research and development- - 2.8 Adjustment of tax contingency reserves(18.9) 4.2 1.4 Non-deductible stock-based compensation 0.9 3.3 0.7 Other, net0.8 2.1 (0.7) 15.0 %4.6 %34.7 %

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

10. INCOME TAXES (CONTINUED)

We estimate that it is reasonably possible that the total amounts of unrecognized tax benefits will significantly
decrease over the next 12 months due to the lapse of the applicable foreign statute of limitations. We estimate
the range of this change to be between $0.5 million and $0.7 million in taxes, penalties and interest.

We operate in multiple tax jurisdictions both in the U.S. and outside of the U.S. Accordingly, we must
determine the appropriate allocation of income to each of these jurisdictions. This determination requires us to
make several estimates and assumptions. Tax audits associated with the allocation of this income, and other
complex issues, may require an extended period of time to resolve and may result in adjustments to our income
tax balances in those years that are material to our consolidated financial position and results of operations. We
are no longer subject to income tax examination for taxable years prior to fiscal 2009 and 2006 in the case of
U.S. federal and non-U.S. income tax authorities, respectively, and for tax years generally before fiscal 2006, in
the case of state taxing authorities, consisting primarily of Minnesota and California.

At September 30, 2010, we have approximately $6.0 million of accumulated undistributed earnings of
controlled foreign subsidiaries that are considered to be reinvested indefinitely as of such date pursuant to
authoritative guidance issued by FASB related to undistributed earnings of subsidiaries and corporate joint
ventures. Accordingly, no deferred tax has been provided on such earnings. If the applicable earnings were
remitted to us, applicable U.S. federal tax would be substantially offset by available foreign tax credits.

11. STOCK-BASED COMPENSATION

Stock-based awards are granted under the terms of the 2000 Omnibus Stock Plan as amended and restated
as of December 4, 2009 (the Omnibus Plan), as well as our Stock Option Plan as amended and restated as
of November 27, 2006 (the Stock Option Plan) and Non-Officer Stock Option Plan as amended and
restated as of November 27, 2006 (the Non-Officer Plan), both of which expired during the first quarter of
fiscal 2007 (the Plans). Additional awards cannot be made under the Stock Option Plan or the Non-Officer
Plan. The authority to grant options under the Omnibus Plan and set other terms and conditions rests with
the Compensation Committee of the Board of Directors.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

11. STOCK-BASED COMPENSATION (CONTINUED)

The Stock Option Plan and the Non-Officer Plan include nonstatutory stock options (NSOs) and the Stock
Option Plan also includes incentive stock options (ISOs) to employees and others who provide services to
us, including consultants, advisers and directors. Options granted under these plans generally vest over a
four year service period and will expire if unexercised after ten years from the date of grant. Share awards
vest upon continued employment. The exercise price for ISOs and non-employee director options granted
under the Stock Option Plan was set at the fair market value of our common stock based on the closing
price on the date of grant. The exercise price for NSOs granted under the Stock Option Plan or the Non-
Officer Plan was set by the Compensation Committee of the Board of Directors and was set to the exercise
price based on the closing price on the date of grant.

The Omnibus Plan authorizes the issuance of up to 5,750,000 common shares in connection with awards of
stock options, stock appreciation rights, restricted stock, performance units or stock awards. Eligible
participants include our employees, non-employee directors, consultants and advisors. Awards may be granted
under the Omnibus Plan until December 4, 2019 as an authorization to issue an additional 2,500,000 common
shares was ratified on January 25, 2010 at the Annual Meeting of Stockholders. Options under the Omnibus
Plan can be granted as either ISOs or NSOs. The exercise price shall be determined by our Compensation
Committee but shall not be less than the fair market value of our common stock based on the closing price on
the date of grant.

Additionally, we have outstanding stock options under various plans assumed in connection with our prior
acquisition of NetSilicon, Inc. (the Assumed Plans). Additional awards cannot be made by us under the
Assumed Plans.

We recorded cash received from the exercise of stock options of $1.7 million, $0.4 million and $1.7 million
during fiscal years 2010, 2009 and 2008, respectively. The excess tax benefits from stock-based compensation
were immaterial during fiscal 2010 and were $0.1 million and $0.2 million during fiscal 2009 and 2008,
respectively. Upon exercise, we issue new shares of stock. The Plans have provisions allowing employees to
elect to pay their withholding obligation through share reduction. No employees elected to pay income tax
withholding obligations through share reduction during fiscal 2010, 2009 or 2008.

Also, we sponsor an Employee Stock Purchase Plan as amended and restated as of December 4, 2009 and
November 27, 2006 (the Purchase Plan), covering all domestic employees with at least 90 days of continuous
service and who are customarily employed at least 20 hours per week. The Purchase Plan allows eligible
participants the right to purchase common stock on a quarterly basis at the lower of 85% of the market price at
the beginning or end of each three-month offering period. The Purchase Plan was recently ratified on January
25, 2010 at the Annual Meeting of Stockholders to increase the number of shares reserved for future purchases
to the Purchase Plan by 250,000 shares bringing the total number of shares to 2,000,000 shares of our Common
Stock that may be purchased under the plan. Employee contributions to the Purchase Plan were $0.9 million in
the fiscal year ending 2010 and $1.0 million each in the fiscal years ended 2009 and 2008. Pursuant to the
Purchase Plan, 124,087, 145,316, and 117,162 common shares were issued to employees during the fiscal years
ended 2010, 2009 and 2008, respectively. Shares are issued under the Purchase Plan from treasury stock. As of
September 30, 2010, 427,442 common shares were available for future issuances under the Purchase Plan.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

11. STOCK-BASED COMPENSATION (CONTINUED)

Stock-based compensation expense is included in the consolidated results of operations as follows (in
thousands):

Stock-based compensation cost capitalized as part of inventory was immaterial as of September 30, 2010, 2009
and 2008.

A summary of options and common shares reserved for grant under the Plans and Assumed Plans are as follows
(in thousands, except per common share amounts):

(1) The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $9.49 as of September 30, 2010,
which would have been received by the option holders had all option holders exercised their options as of that date.

The intrinsic value of an option is the amount by which the fair value of the underlying stock exceeds its
exercise price. The total intrinsic value of all options exercised during each of the twelve months ended
September 30, 2010, 2009 and 2008 was $0.6 million, $0.2 million and $0.9 million, respectively.

The table below shows the weighted average fair value, which was determined based upon the fair value of each
option on the grant date utilizing the Black-Scholes option-pricing model and the related assumptions:

201020092008Cost of sales149$ 152$ 181$ Sales and marketing1,185 1,269 1,251 Research and development739 833 858 General and administrative1,298 1,264 1,407 Stock-based compensation before income taxes3,371 3,518 3,697 Income tax benefit(1,121) (1,141) (1,223) Stock-based compensation after income taxes2,250$ 2,377$ 2,474$ Year ended September 30,Weighted OptionsWeightedAverageAggregateAvailableOptionsAverageContractual TermIntrinsicfor GrantOutstandingExercise Price(in years)Value (1)Balance at September 30, 20091,305 4,714 11.10$ Additional Shares approved for grant2,500 Granted(1,017) 1,017 8.29 Exercised- (257) 9.43 Cancelled749 (846) 13.26 Balance at September 30, 20103,537 4,628 10.34$ 6.24,253$ Exercisable at September 30, 20103,207 10.86$ 5.02,843$ 201020092008Fair value of options granted (in thousands)3,445$ 2,667$ 3,727$ Weighted average per option grant date fair value3.39$ 3.27$ 5.17$ Assumptions used for option grants: Risk free interest rate1.86% - 2.4%1.57% - 2.41%2.53% - 3.41% Expected term4.5 - 5 years 4.5 - 5 years 4 - 5 years Expected volatility43% - 45%41% - 45%36% - 45% Weighted average volatility44%42%40% Expected dividend yield000

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

11. STOCK-BASED COMPENSATION (CONTINUED)

The fair value of each option award granted during the periods presented was estimated using the Black-Scholes
option valuation model that uses the assumptions noted in the table above. Expected volatilities are based on
the historical volatility of our stock. We use historical data to estimate option exercise and employee
termination information within the valuation model; separate groups of grantees that have similar historical
exercise behaviors are considered separately for valuation purposes. The expected term of options granted is
derived from the vesting period and historical information and represents the period of time that options granted
are expected to be outstanding. The risk-free rate used is the zero-coupon U.S. Treasury bond rate in effect at
the time of the grant whose maturity equals the expected term of the option.

A summary of our non-vested options as of September 30, 2010 and changes during the twelve months then
ended is presented below (in thousands, except per common share amounts):

We use historical data to estimate pre-vesting forfeiture rates. The pre-vesting forfeiture rate used in fiscal 2010
was 2.0%. As of September 30, 2010 the total unrecognized compensation cost related to non-vested stock-
based compensation arrangements, net of expected forfeitures, was $4.7 million and the related weighted
average period over which it is expected to be recognized is approximately 2.5 years.

At September 30, 2010, the weighted average exercise price and remaining life of the stock options are as
follows (in thousands, except remaining life and exercise price):

The total fair value of shares vested during fiscal 2010 was $2.9 million, $3.2 million in fiscal 2009 and
$3.4 million in fiscal 2008.

Weighted AverageGrant DateNumber ofFair Value perOptionsCommon ShareNonvested at September 30, 20091,2853.80$ Granted1,017 3.39$ Vested(721) 3.96$ Forfeited(160) 3.77$ Nonvested at September 30, 20101,4213.42$ Options Outstanding Options ExercisableWeighted Average Remaining Weighted Number of Weighted Range of OptionsContractual LifeAverage SharesAverage Exercise PricesOutstanding ( In Years) Exercise Price Vested Exercise Price$2.19 - $6.003131.884.32$ 3134.32$ $6.01 - $8.003932.997.32$ 3877.31$ $8.01 - $9.001,4048.708.23$ 3388.40$ $9.01 - $11.007785.3210.17$ 58510.19$ $11.01 - $13.005275.7912.52$ 51912.53$ $13.01 - $14.004475.9913.42$ 43113.42$ $14.01 - $15.002404.3414.72$ 23714.73$ $15.01 - $16.885266.7515.29$ 39815.30$ $2.19 - $16.884,628 6.1510.34$ 3,208 10.86$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

12. SALE AND LEASEBACK OF BUILDING

On February 18, 2008, we entered into a contract for the sale of our building in Dortmund, Germany, and
subsequent partial leaseback for a five year term (the Agreement). Upon the closing of the transaction in
March 2008, we initiated the leaseback of approximately 40% of the property for a period of five years,
with a renewal option for an additional five years.

The building was sold for 4.5 million Euros (equivalent to $6.9 million), resulting in a gain on sale of 1.0
million Euros ($1.6 million). As a result of the leaseback, $1.5 million of the gain on the sale was deferred
and is being recognized ratably over the lease term as an offset to rent expense. The remaining $0.1
million was recognized in the second quarter of fiscal 2008 as a component of general and administrative
expense. Of the total sale price, 4.2 million Euros ($6.5 million) was received during March 2008 and the
remaining 0.3 million Euros ($0.4 million) was received in April 2008. We were required, as part of the
Agreement, to deposit 0.3 million Euros ($0.4 million) into an interest-bearing bank account, which will be
refunded to us at the end of the lease term. This deposit was made during March 2008 and is included as
restricted cash in other noncurrent assets on our consolidated balance sheet as of September 30, 2010 and
2009.

The lease expires in 2013 with future minimum payments as follows: In years 2011 through 2012 our
yearly minimum lease payment is $0.4 million each year. In 2013, our minimum lease payment will be
$0.2 million.

13. COMMON STOCK REPURCHASE

Our Board of Directors has authorized 1,500,000 shares of our common stock for repurchase. During fiscal
2008, we began to repurchase our common stock and purchased 471,200 shares for $5.1 million. During fiscal
2009, we purchased an additional 893,162 shares for $6.6 million. We did not repurchase any of our stock
during fiscal 2010. As of September 30, 2010, 135,638 shares remain available for repurchase.

14. SHARE RIGHTS PLAN

Under our share rights plan, each right entitles its holder to buy one one-hundredth of a share of a Series A
Junior Participating Preferred Stock at an exercise price of $60, subject to adjustment. The rights are not
exercisable until a specified distribution date as defined in the Share Rights Agreement. The Rights will expire
on June 30, 2018, unless extended or earlier redeemed or exchanged by us as defined in the Share Rights
Agreement.

15. EMPLOYEE BENEFIT PLANS

We currently have a savings and profit sharing plan pursuant to Section 401(k) of the Internal Revenue Code
(the Code), whereby eligible employees may contribute up to 25% of their pre-tax earnings, not to exceed
amounts allowed under the Code.

We provide a match of 100% on the first 3% of each employee’s bi-weekly contribution and a 50% match on
the next 2% of each employee’s bi-weekly contribution. In addition, we may make contributions to the plan at
the discretion of the Board of Directors. We provided matching contributions of $1.1 million, $1.2 million and
$1.2 million in the fiscal years ended September 30, 2010, 2009 and 2008, respectively.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

16. COMMITMENTS

We have entered into various operating lease agreements for office facilities and equipment, the last of which
expires in fiscal 2017. The office facility leases generally require us to pay a pro-rata share of the lessor’s
operating expenses. Certain operating leases contain escalation clauses and are being amortized on a straight-
line basis over the term of the lease.

The following schedule reflects future minimum rental commitments under noncancelable operating leases:

The following schedule shows the composition of total rental expense for all operating leases for the years
ended September 30 (in thousands):

17. CONTINGENCIES

Initial Public Offering Securities Litigation
There have been no additional developments in In re Initial Public Offering Securities Litigation since our
Annual Report on Form 10-K for the year ended September 30, 2009. Under the settlement, our insurers are to
pay the full amount of settlement share allocated to us, and we would bear no financial liability beyond our
deductible of $250,000. While there can be no guarantee as to the ultimate outcome of this pending lawsuit, we
expect that our liability insurance will be adequate to cover any potential unfavorable outcome, less the
applicable deductible amount of $250,000 per claim. As of September 30, 2010, we have an accrued liability
for the anticipated settlement of $300,000 which we believe is adequate and reflects the amount of loss that is
probable and a receivable related to the insurance proceeds of $50,000, which represents the anticipated
settlement of $300,000 less our $250,000 deductible. In the event we should have losses that exceed the limits
of the liability insurance, such losses could have a material adverse effect on our business and our consolidated
results of operations or financial condition.

Shareholder Derivative Litigation
On June 18, 2010 and June 24, 2010, respectively, two shareholders filed derivative actions against our
directors, our former Chief Financial Officer, and another executive officer, in the Hennepin County District
Court, State of Minnesota, in Minneapolis. We also were named as a nominal defendant in the actions. The
complaints alleged that the individual defendants caused us to operate in countries with dubious business
practices without having internal controls or an accounting system that were adequate to ensure that we did not
violate the Foreign Corrupt Practices Act. The complaints alleged causes of action against the individual
defendants for (1) breach of fiduciary duty, (2) waste of corporate assets, and (3) unjust enrichment. The
complaints sought to recover, purportedly on our behalf, unspecified damages, equitable relief, attorneys’ fees,
and costs of litigation. On August 2, 2010, we filed a motion to dismiss these lawsuits. On August 16, 2010,
the derivative actions were dismissed without prejudice.

201020092008Rentals3,447$ 3,602$ 3,041$ Less: sublease rentals- - (301) 3,447$ 3,602$ 2,740$ AmountFiscal Year(in thousands)20112,389$ 20122,172 20131,344 2014723 2015499 Thereafter243 Total minimum payments required7,370$

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

17. CONTINGENCIES (CONTINUED)

Patent Infringement Lawsuit
On May 11, 2010, SIPCO, LLC filed a patent infringement lawsuit against us in federal court in the Eastern
District of Texas. The lawsuit included allegations against Digi and five other companies pertaining to the
infringement of SIPCO’s patents by wireless mesh networking products. The lawsuit seeks monetary and non-
monetary relief. We cannot predict the outcome of this matter at this time or whether it will have a materially
adverse impact on our business prospects and our consolidated financial condition, results of operations or cash
flow.

18. QUARTERLY FINANCIAL DATA (UNAUDITED)

(in thousands, except per common share data)

Dec. 31Mar. 31June 30Sept. 302010 Net sales42,968$ 45,076$ 47,238$ 47,266$ Gross profit21,713 22,748 23,718 24,030 Net income (1)(2)(3)1,199 1,686 3,812 2,244 Net income per common share - basic0.05 0.07 0.15 0.09 Net income per common share - diluted0.05 0.07 0.15 0.09 2009 Net sales41,361$ 40,085$ 44,470$ 40,012$ Gross profit21,248 19,169 21,437 19,411 Net income (1)(2)1,016 715 1,393 959 Net income per common share - basic0.04 0.03 0.06 0.04 Net income per common share - diluted0.04 0.03 0.06 0.04 (1) During 2010 and 2009, we recorded discrete income tax benefits of $2.3 million and $1.2 million, respectively. Discrete income tax benefits for fiscal 2010 were recorded of $0.1 million in the first quarter and $2.2 million in the third quarter related to the reversal of tax reserves primarily due to the closure of prior tax years through statute expiration and audit. Discrete income tax benefits for fiscal 2009 were recorded of $0.4 million in the first quarter, $0.5 million in the third quarter and $0.3 million in the fourth quarter related to the reversal of previously established income tax reserves, the resolution of of certain state tax matters and the closing of a prior tax year. (2) We reversed a business restructuring accrual of $0.4 million ($0.2 million after tax) in the second quarter of fiscal 2010 and $0.1 million ($0.1 million after tax) in the fourth quarter of fiscal 2010. During the third quarter of fiscal 2009, we recorded the business restructuring charge of $2.0 million ($1.3 million after tax).(3) We incurred expenses related to the investigation (see Note 19) and recorded $1.1 million ($0.7 million after tax) in the third quarter of fiscal 2010 and $0.3 million ($0.2 million after tax) in the fourth quarter of fiscal 2010.Quarter ended

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)

19. INVESTIGATION

During the third quarter of fiscal 2010, we received allegations regarding possible violations of our gifts, travel
and entertainment policy for activities in the Asia Pacific (APAC) region by a few employees. We initiated an
investigation of these policy and corresponding internal control issues, and any possible related violations of
applicable law, including the Foreign Corrupt Practices Act (FCPA). We voluntarily disclosed the allegations
to the United States Department of Justice (DOJ) and the United States Securities and Exchange Commission
(SEC). The investigation was under the direction of the Audit Committee, comprised solely of independent
directors, utilizing outside counsel, and focused on the APAC region. For completeness purposes, the
investigation reviewed certain other foreign regions where no allegations had been made. We provided the DOJ
and SEC with updates and our proposed remediation plan.

We announced on August 2, 2010 that we received confirmation through discussions with representatives of the
DOJ and the SEC that they would not be initiating any enforcement proceedings against Digi, including not
seeking any monetary or other sanctions.

The investigation identified violations of company policy that primarily involved three individuals in Hong
Kong and our former Chief Financial Officer. The investigation also found an unsubstantiated accrued liability
recorded in Hong Kong. All four individuals were terminated or had resigned from the company as of May 12,
2010. While we determined that no adjustment was required to our previously reported consolidated financial
statements, we recorded an immaterial out-of-period adjustment during the third quarter of fiscal 2010 in order
to correct the unsubstantiated accrued liability in Hong Kong.

Based upon what we learned from the investigation, we have and are further strengthening our monitoring
controls over foreign locations and other operational and regulatory compliance procedures, including retention
of third party assistance to enhance our controls. We incurred general and administrative expense of $1.4
million related to the cost of the investigation and remediation during fiscal 2010.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
AND FINANCIAL DISCLOSURE.

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

As of the end of the period covered by this report, we conducted an evaluation, under the supervision and with
the participation of the principal executive officer and acting principal financial officer, of our disclosure
controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of
1934 (the “Exchange Act”)). Based on this evaluation, the principal executive officer and acting principal
financial officer concluded that our disclosure controls and procedures are effective.

Management’s Report on Internal Control over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting.
Internal control over financial reporting is a process designed to provide reasonable assurance regarding the
reliability of financial reporting and the preparation of financial statements for external purposes in accordance
with generally accepted accounting principles.

We assessed the effectiveness of our internal control over financial reporting as of September 30, 2010 using
the framework set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO)
in Internal Control – Integrated Framework. Based on this assessment, management concluded that our
internal control over financial reporting was effective as of September 30, 2010. The effectiveness of our
internal control over financial reporting as of September 30, 2010 has been audited by PricewaterhouseCoopers
LLP, an independent registered public accounting firm, as stated in their report which appears in Item 8 of this
report.

Changes in Internal Control Over Financial Reporting

There was no change in our internal control over financial reporting identified in connection with the evaluation
required by Rule 13a-15(d) and 15d-15(d) of the Exchange Act that occurred during the quarterly period ended
September 30, 2010 that has materially affected, or is reasonably likely to materially affect, our internal control
over financial reporting.

Investigation in Hong Kong
The previously announced investigation, which was the result of allegations that we learned of in April 2010,
was completed in July 2010 (refer to Note 19 of the Consolidated Financial Statements for more detail). Soon
after learning of these allegations, we began to take immediate remedial actions. The investigation identified
violations of our gifts, travel and entertainment policy that primarily involved three individuals in Hong Kong
and our former Chief Financial Officer. The investigation also found an unsubstantiated accrued liability
recorded in Hong Kong. All four individuals were terminated or had resigned from the company as of May 12,
2010.

As a result of the allegations and the ultimate findings of the investigation, we performed an evaluation of our
internal controls over financial reporting during the third fiscal quarter of 2010 to consider the implications of
these findings. We identified deficiencies in the design of the internal reporting structure in Hong Kong, as well
as deficiencies in the design of certain controls in Hong Kong, including expense reviews, cash controls, review
of Hong Kong financial information and account reconciliations in both Hong Kong and the corporate office,
and in the competency of those performing financial accounting and reporting activities in Hong Kong. These
deficiencies allowed inappropriate activities, such as those that ultimately led to the investigation and

ITEM 9A. CONTROLS AND PROCEDURES (CONTINUED)

terminations and resignation noted above, to not be prevented or detected on a timely basis. We have
determined based on a review of the internal reporting structure and controls at Hong Kong in comparison to
our other locations that these issues were unique to the Hong Kong entity and that the Company’s other entities
had controls in place that were operating and effective. While we determined that no adjustment was required
to our previously reported consolidated financial statements, we determined that the aggregation of these
control deficiencies, combined with the influence and span of control of our former Chief Financial Officer in
the Hong Kong region and collusion on the part of the individuals involved, resulted in a material weakness in
the Company’s control environment. A material weakness is a deficiency, or a combination of deficiencies, in
internal control over financial reporting such that there is a reasonable possibility that a material misstatement
of the Company’s annual or interim financial statements will not be prevented or detected on a timely basis.
The control deficiencies at Digi could have resulted in a material misstatement of the consolidated financial
statements that would not have been prevented or detected on a timely basis.

We determined that this material weakness was remediated during the third quarter of fiscal 2010.

ITEM 9B. OTHER INFORMATION

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On November 23, 2010, our Board of Directors amended and restated the company’s By-Laws, as previously
amended and restated (the “By-Laws”) to clarify certain provisions regarding a stockholder’s notice of business
to be conducted or notice of director nominations to be made at an annual meeting. The amendments are
effective as of November 23, 2010.

As a result of the amendments, the deadlines for such notices set forth in Sections 2.02(a), with respect to
stockholder’s notices of business to be conducted, and 3.13(a), with respect to stockholder’s notices of director
nominations to be made, have also been adjusted and clarified. In order to be timely any such stockholder’s
notice must be delivered to our Secretary not less than 120 days before the first anniversary of the date of the
preceding year’s annual meeting of stockholders. If, however, the date of the meeting is more than 30 days
before or 60 days after such anniversary date, the notice will be timely only if delivered not less than 120 days
before the meeting or, if later, within 10 days after the first public announcement of the date of the annual
meeting. Section 3.13(a) further provides that, in the case of a special meeting of stockholders called for the
purpose of electing directors, a stockholder’s notice of director nominations to be made at that meeting will be
timely if delivered to our Secretary within ten days after the first public announcement of the date of such
special meeting.

Both Section 2.02(b) and Section 3.13(b) have been amended to further clarify the securities and related
agreements that must be set forth on a stockholder’s notice. Those items are, with respect to the stockholder
and any beneficial owner(s) identified in the notice: (A) the number of shares of our stock of each class or series
that is beneficially owned, (B) any option, warrant, convertible security, stock appreciation right, swap, or
similar right with an exercise or conversion privilege or a settlement payment or mechanism at a price related to
any class or series of shares of our stock or with a value derived in whole or in part from the value of any class
or series of shares of our stock (a “Derivative Instrument”) and any other opportunity to profit or share in any
profit derived from any increase or decrease in the value of our shares, (C) any proxy, contract, arrangement,
understanding, or relationship pursuant to which such stockholder or any such beneficial owner has a right to
vote any shares, (D) any short interest in any Digi security, (E) any rights to dividends on our shares that are
separated or separable from the underlying shares of our stock, (F) any proportionate interest in shares of our
stock or Derivative Instruments held, directly or indirectly, by a general or limited partnership in which such
stockholder or any such beneficial owner is a general partner or, directly or indirectly, beneficially owns an
interest in a general partner and (G) any performance-related fees that such stockholder or any such beneficial

ITEM 9B. OTHER INFORMATION (CONTINUED)

owner is entitled to based on any increase or decrease in the value of shares of our stock or Derivative
Instruments, if any, as of the date of such notice.

Section 2.02(b), as amended, requires that a stockholder’s notice of business to be conducted at an annual
meeting set forth (i) a brief description of the business desired to be brought before the meeting and the reasons
for conducting such business at the meeting, (ii) the name and address, as they appear on the our books, of the
stockholder proposing such business and the name and address of any beneficial owner on whose behalf the
proposal is made, (iii) securities and related agreements disclosure discussed above, (iv) any material interest in
such business of the stockholder or any such beneficial owner, and (v) a representation and other appropriate
evidence that the stockholder is a holder of record of shares of stock entitled to vote on such business at the
meeting, will continue to be a holder of record of shares of stock entitled to vote on such business through the
date of the meeting, and intends to appear in person or by proxy at the meeting to make the proposal.

Section 3.13(b), as amended, requires that a stockholder’s notice of director nominations to be made at an
annual meeting of stockholders set forth, as to each person whom the stockholder proposes to nominate for
election as a director: (i) such person’s name, (ii) all information relating to such person that is required to be
disclosed in solicitations of proxies for election of directors in an election contest, or that is otherwise required,
pursuant to Regulation 14A under the Exchange Act, and (iii) such person’s signed written consent to being a
nominee and to serving as a director if elected. As to the stockholder giving the notice, Section 3.13(b), as
amended, further requires (i) the name and address, as they appear on our books, of such stockholder and the
name and address of any beneficial owner on whose behalf the nomination is made, (ii) securities and related
agreements disclosure discussed above, (iii) a description of any material relationships, including financial
transactions and compensation, between the stockholder and the proposed nominee(s), and (iv) a representation
and other appropriate evidence that the stockholder is a holder of record of shares of our stock entitled to vote
for the election of directors, will continue to be a holder of record of shares of stock entitled to vote for the
election of directors through the date of the meeting, and intends to appear in person or by proxy at the meeting
to nominate the person or persons specified in the notice.

In addition to certain other technical and conforming amendments to Sections 2.02 and 3.13 of the By-Laws,
Section 2.04 was amended to permit delivery of notice of a meeting of stockholders by delivering a separate
written notice of the posting of such information on an electronic network.

The foregoing summary of the amendments is qualified in its entirety by reference to the text of the amended
and restated By-Laws, which is attached to this Annual Report on Form 10-K as Exhibit 3(b) and is
incorporated herein by reference.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Incorporated into this item by reference is the information appearing under the headings “Proposal No. 1 –
Election of Directors” and “Security Ownership of Principal Stockholders and Management” in our Proxy
Statement.

Executive Officers of the Registrant

As of the date of filing this Form 10-K, the following individuals were executive officers of the Registrant:

Name
Joseph T. Dunsmore

Brenda L. Mueller

Age
52

Position
Chairman, President and Chief Executive Officer

Acting Principal Financial Officer, Acting Principal
Accounting Officer and Corporate Controller

Lawrence A. Kraft

Senior Vice President of Sales and Marketing

Joel K. Young 46
and Chief Technical Officer

Senior Vice President of Research and Development

Mr. Dunsmore joined our company in October 1999 as President and Chief Executive Officer and a member of
the Board of Directors and was elected Chairman of the Board in May 2000. Prior to joining us, Mr. Dunsmore
was Vice President of Access for Lucent Microelectronics, a telecommunications company now known as
Agere Systems Inc., since June 1999. From October 1998 to June 1999, he acted as an independent consultant
to various high technology companies. From February 1998 to October 1998, Mr. Dunsmore was Chief
Executive Officer of NetFax, Inc., a telecommunications company. From October 1995 to February 1998, he
held executive management positions at US Robotics and then at 3COM after 3COM acquired US Robotics in
June 1997. Prior to that, Mr. Dunsmore held various marketing management positions at AT&T Paradyne
Corporation from May 1983 to October 1995. Mr. Dunsmore is also a director of Analysts International
Corporation.

Brenda L. Mueller, our company’s Corporate Controller, was elected by our Board of Directors on May 7,
2010, as Acting Principal Financial Officer and Acting Principal Accounting Officer, effective the same day.
Ms. Mueller joined our company as Corporate Controller in March 2000. Prior to joining us, Ms. Mueller
served as Director, General Accounting and Finance Services at Novartis Nutrition Corporation, then a
privately-held division of Novartis AG, for 15 years and was primarily responsible for accounting and financial
reporting and financial management.

Mr. Kraft joined our company as Vice President of Americas Sales and Marketing in February 2003 and was
named Senior Vice President of Sales and Marketing in November 2005. Prior to joining us, Mr. Kraft was
Vice President of Marketing for Advanced Switching Communications (ASC), a provider of broadband access
platforms, from June 1999 to February 2002. From July 1998 to October 1998, Mr. Kraft was Vice President of
Marketing for NetFax, Inc., a telecommunications company. Mr. Kraft also previously held the positions of
Manager of Product Marketing at 3COM/U.S. Robotics, Vice President of Marketing for ISDN Systems
Corporation, and Group Products Manager for the Internet access program at Sprint Corporation.

Mr. Young joined our company in July 2000 as Vice President of Engineering and was named Vice President of
Research and Development and Chief Technical Officer in November 2005. In October 2006, Mr. Young was
named Senior Vice President of Research and Development and Chief Technical Officer. Prior to joining us,
Mr. Young served as a Vice President for Transcrypt International, a provider of encryption products, in various

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
(CONTINUED)

engineering, sales and marketing positions from February 1996 to June 2000. Before that, he held various
engineering and management positions at AT&T and AT&T Bell Laboratories from 1986 to 1996.

On November 15, 2010, our Board of Directors elected Steven E. Snyder to serve as the company’s Senior Vice
President, Chief Financial Officer and Treasurer, effective upon his commencement of employment, which is
expected to be November 30, 2010.

Mr. Snyder, age 54, most recently served as Chief Financial Officer at Gearworks, Inc. from November 2008 to
September 2009. In August 2009, Gearworks, Inc. merged with Xora, Inc. From October 2007 to June 2008,
he was a General Manager of the storage solutions group at Xiotech Corporation, a privately held data storage
company. From January 2003 to October 2007, he served as Chief Financial Officer and Vice President
manufacturing and administration at Xiotech Corporation. Prior to that, Mr. Snyder served as Chief Financial
Officer at several companies, including Ancor Communications, Inc., then a publicly traded developer and
manufacturer of fibre channel switching products for data center networks. Mr. Snyder also spent ten years at
Cray Research, Inc. in progressively responsible financial roles. Earlier roles include seven years in various
financial positions at Control Data Corporation and two years with KPMG Peat Marwick.

Code of Ethics

We have in place a “code of ethics” within the meaning of Rule 406 of Regulation S-K, which is applicable to
our senior financial management, including specifically our principal executive officer, principal financial
officer and controller. A copy of this code of ethics is included as an exhibit to this report. We intend to satisfy
our disclosure obligations regarding any amendment to, or a waiver from, a provision of this code of ethics by
posting such information on our website at www.digi.com. We also have a “code of conduct” that applies to all
directors, officers and employees, a copy of which is available through our website (www.digi.com) under the
“About us – Investor Relations – Corporate Governance” caption.

ITEM 11. EXECUTIVE COMPENSATION

Incorporated into this item by reference is the information appearing under the heading “Compensation of
Directors,” “Executive Compensation,” the information regarding compensation committee interlocks and
insider participation under the heading “Proposal No. 1 – Election of Directors” on our Proxy Statement.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
AND RELATED STOCKHOLDER MATTERS

Incorporated into this item by reference is the information appearing under the headings “Security Ownership of
Principal Shareholders and Management” and “Equity Compensation Plan Information” in our Proxy
Statement.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR
INDEPENDENCE

Incorporated into this item by reference is the information regarding director independence under the heading
“Proposal No. 1 – Election of Directors” and the information regarding related person transactions under the
heading “Related Person Transaction Approval Policy” on our Proxy Statement.

ITEM 14. PRINCIPAL ACCOUNTING FEES AND SERVICES

Incorporated into this item by reference is the information under “Proposal No. 2 – Ratification of Independent
Public Accounting Firm” in our Proxy Statement.

PART IV

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES

(a) Consolidated Financial Statements and Schedules of the Company (filed as part of this Annual Report

on Form 10-K)

1. Consolidated Statements of Operations for the fiscal years ended September 30, 2010, 2009 and

2008

Consolidated Balance Sheets as of September 30, 2010 and 2009

Consolidated Statements of Cash Flows for the fiscal years ended September 30, 2010, 2009 and

2008

Consolidated Statements of Stockholders' Equity and Comprehensive Income for the fiscal years

ended September 30, 2010, 2009 and 2008

Notes to Consolidated Financial Statements

2. Schedule of Valuation and Qualifying Accounts

3. Report of Independent Registered Public Accounting Firm

(b) Exhibits

Exhibit
Number

2(a)

3(a)

3(b)

4(a)

4(b)

10(a)

10(b)

10(c)

Description

Share Purchase Agreement dated April 28, 2008 among Digi International Limited, a
subsidiary of Digi International Inc., and all of the shareholders of Sarian Systems Limited
(excluding schedules and exhibits which the Registrant agrees to furnish supplementally to
the Securities and Exchange Commission upon request) (1)

Restated Certificate of Incorporation of the Company, as amended (2)

Amended and Restated By-Laws of the Company

Share Rights Agreement, dated as of April 22, 2008, between the Company and Wells Fargo
Bank, N.A., as Rights Agent (3)

Form of Amended and Restated Certificate of Powers, Designations, Preferences and Rights
of Series A Junior Participating Preferred Shares (4)

Digi International Inc. Stock Option Plan as Amended and Restated as of November 27,
2006* (5)

Form of indemnification agreement with directors and officers of the Company* (6)

Agreement between the Company and Subramanian Krishnan dated March 26, 1999* (7)

10(c)(i) Amendment to Agreement between the Company and Subramanian Krishnan dated February

5, 2001* (8)

10(d)

10(e)

Employment Agreement between the Company and Joseph T. Dunsmore dated September
27, 2006* (9)

Digi International Inc. Employee Stock Purchase Plan, as amended and restated as of
December 4, 2009* (10)

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES (CONTINUED)

10(f)

10(g)

10(h)

10(i)

10(j)

10(k)

Digi International Inc. 2000 Omnibus Stock Plan, as amended and restated as of December 4,
2009* (11)

Digi International Inc. Non-Officer Stock Option Plan, as Amended and Restated as of
November 27, 2006 (12)

NetSilicon, Inc. Amended and Restated 1998 Director Stock Option Plan (13)

NetSilicon, Inc. Amended and Restated 1998 Incentive and Non-Qualified Stock
Option Plan (14)

NetSilicon, Inc. 2001 Stock Option and Incentive Plan (15)

Form of Notice of Grant of Stock Options and Option Agreement (for grants under Digi
International Inc. Stock Option Plan)* (16)

10(l)

Agreement between the Company and Lawrence A. Kraft, dated February 4, 2003* (17)

10(l)(i) Amendment to Agreement between the Company and Lawrence A. Kraft dated July 30,

2007* (18)

10(m)

10(n)

10(o)

10(p)

31(a)

31(b)

Agreement between the Company and Joel K. Young dated July 30, 2007* (19)

Form of Notice of Grant of Stock Options and Option Agreement (for grants under Digi
International Inc. 2000 Omnibus Stock Plan before January 26, 2010)* (20)

Form of Notice of Grant of Stock Options and Option Agreement (amended form for grants
under Digi International Inc. Omnibus Stock Plan on or after January 26, 2010)* (21)

English Language Summary of Sale and Leaseback Agreement dated February 18, 2008
between Digi International GmbH and Deutsche Structured Finance GmbH & Co. Alphard
KG. (22)

Code of Ethics (23)

Subsidiaries of the Company

Consent of Independent Registered Public Accounting Firm

Powers of Attorney

Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer

Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer

Section 1350 Certification

*Management contract or compensatory plan or arrangement required to be filed as an exhibit to this
Form 10-K.

(1)

(2)

(3)

(4)

(5)

Incorporated by reference to Exhibit 2(a) to the Company’s Form 10-Q for the quarter ended March 31,
2008 (File No. 1-34033).
Incorporated by reference to Exhibit 3(a) to the Company’s Form 10-K for the year ended September 30,
1993 (File no. 0-17972).
Incorporated by reference to Exhibit 4(a) to the Company’s Registration Statement on Form 8-A filed on
April 25, 2008 (File No. 1-34033).
Incorporated by reference to Exhibit 4(b) to the Company’s Registration Statement on Form 8-A filed on
April 25, 2008 (File No. 1-34033).
Incorporated by reference to Exhibit 10(a) to the Company’s Form 10-K for the year ended September 30,
2006 (File no. 0-17972).

ITEM 15. EXHIBITS, FINANCIAL STATEMENT SCHEDULES (CONTINUED)

(6)

(7)

(8)

(9)

Incorporated by reference to Exhibit 10 to the Company’s Form 10-Q for the quarter ended June 30, 2010
(File no. 1-34033).
Incorporated by reference to Exhibit 10(k) to the Company’s Form 10-Q for the quarter ended March 31,
1999 (File no. 0-17972)
Incorporated by reference to Exhibit 10(e)(i) to the Company’s Form 10-Q for the quarter ended
December 31, 2000 (File no. 0-17972).
Incorporated by reference to Exhibit 10(d) to the Company’s Form 10-K for the year ended September 30,
2006 (File no. 0-17972).

(10) Incorporated by reference to Exhibit 10(b) to the Company’s Form 10-Q for the quarter ended December

31, 2009 (File no. 1-34033).

(11) Incorporated by reference to Exhibit 10(a) to the Company’s Form 10-Q for the quarter ended December

31, 2009 (File no. 1-34033).

(12) Incorporated by reference to Exhibit 10(g) to the Company’s Form 10-K for the year ended September 30,

2006 (File no. 0-17972).

(13) Incorporated by reference to Exhibit 4.3 to the Company’s Registration Statement on Form S-8 dated

February 13, 2002 (File no. 333-82672).

(14) Incorporated by reference to Exhibit 4.3 to the Company’s Registration Statement on Form S-8 dated

February 13, 2002 (File no. 333-82670).

(15) Incorporated by reference to Exhibit 4.3 to the Company’s Registration Statement on Form S-8 dated

February 13, 2002 (File no. 333-82668).

(16) Incorporated by reference to Exhibit 10(a) to the Company’s Form 8-K dated September 13, 2004 (File

no. 0-17972).

(17) Incorporated by reference to Exhibit 10(m) to the Company’s Form 10-K for the year ended September

30, 2006 (File no. 0-17972).

(18) Incorporated by reference to Exhibit 10(a) to the Company’s Form 10-Q for the quarter ended June 30,

2007 (File no. 0-17972).

(19) Incorporated by reference to Exhibit 10(b) to the Company’s Form 10-Q for the quarter ended June 30,

2007 (File no. 0-17972).

(20) Incorporated by reference to Exhibit 10(o) to the Company’s Form 10-K for the year ended September 30,

2008 (File no. 1-34033).

(21) Incorporated by reference to Exhibit 10(c) to the Company’s Form 10-Q for the quarter ended December

31, 2009 (File no. 1-34033).

(22) Incorporated by reference to Exhibit 10(a) to the Company's Form 10-Q for the quarter ended March 31,

2008 (File no. 1-34033).

(23) Incorporated by reference to Exhibit 14 to the Company’s Form 10-K for the year ended September 30,

2003 (File no. 0-17972).

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has
duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

DIGI INTERNATIONAL INC.

November 29, 2010

By:

/s/ Joseph T. Dunsmore
Joseph T. Dunsmore
Chairman, President, Chief Executive Officer and Director

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the
following persons on behalf of the Registrant and in the capacities and on the dates indicated.

November 29, 2010

/s/ Joseph T. Dunsmore
Joseph T. Dunsmore
Chairman, President, Chief Executive Officer and Director
(Principal Executive Officer)

November 29, 2010

/s/ Brenda L. Mueller
Brenda L. Mueller
Corporate Controller and Acting Principal Financial Officer
(Acting Principal Financial Officer)

GUY C. JACKSON
KENNETH E. MILLARD
AHMED NAWAZ
WILLIAM N. PRIESMEYER
BRADLEY J. WILLIAMS

A majority of the Board of Directors*

*Joseph T. Dunsmore, by signing his name hereto, does hereby sign this document on behalf of each of the
above named directors of the Registrant pursuant to Powers of Attorney duly executed by such persons.

November 29, 2010

/s/ Joseph T. Dunsmore
Joseph T. Dunsmore
Attorney-in-fact

SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS

DIGI INTERNATIONAL INC.
(in thousands)

IncreaseBalance at(Decrease) to Balance atbeginningcosts andend ofDescriptionof periodexpensesDeductionsperiodValuation account - doubtful accounts September 30, 2010624$ 132$ 207$ (1)549$ September 30, 2009697$ (1)$ 72$ (1)624$ September 30, 2008479$ 308$ 90$ (1)697$ Reserve for future returns and pricing adjustments September 30, 20101,058$ 43$ (5)$ (2)1,106$ September 30, 20091,369$ (264)$ 47$ (2)1,058$ September 30, 20081,442$ 9$ 82$ (2)1,369$ (1) Uncollectible accounts charged against allowance, net of recoveries(2) Adjustments and recoveries

Exhibit
2(e)

3(a)

3(b)

4(a)

4(b)

10(a)

10(b)

10(c)

EXHIBIT INDEX

Description
Share Purchase Agreement dated April 28, 2008 among
Digi International Limited, a subsidiary of Digi
International Inc., and all of the shareholders of Sarian
Systems Limited (excluding schedules and exhibits which
the Registrant agrees to furnish supplementally to the
Securities and Exchange Commission upon request)

Page
Incorporated by
Reference

Restated Certificate of Incorporation of the Company, as
amended

Incorporated by
Reference

Amended and Restated By-Laws of the Company

Filed Electronically

Share Rights Agreement, dated as of April 22, 2008,
between the Company and Wells Fargo Bank, N.A., as
Rights Agent

Form of Amended and Restated Certificate of Powers,
Designations, Preferences and Rights of Series A Junior
Participating Preferred Shares

Digi International Inc. Stock Option Plan as Amended
and Restated as of November 27, 2006

Form of indemnification agreement with directors and
officers of the Company

Agreement between the Company and Subramanian
Krishnan dated March 26, 1999

10(c)(i)

Amendment to Agreement between the Company and
Subramanian Krishnan dated February 5, 2001

10(d)

10(e)

10(f)

10(g)

10(h)

10(i)

10(j)

10(k)

10(l)

10(l)(i)

10(m)

Employment Agreement between the Company and
Joseph T. Dunsmore dated September 27, 2006

Digi International Inc. Employee Stock Purchase Plan, as
amended and restated as of December 4, 2009

Digi International Inc. 2000 Omnibus Stock Plan, as
amended and restated as of December 4, 2009

Digi International Inc. Non-Officer Stock Option Plan, as
Amended and Restated as of November 27, 2006

NetSilicon, Inc. Amended and Restated 1998 Director
Stock Option Plan

NetSilicon, Inc. Amended and Restated 1998 Incentive
and Non-Qualified Stock Option Plan

NetSilicon, Inc. 2001 Stock Option and Incentive Plan

Form of Notice of Grant of Stock Options and Option
Agreement (for grants under Digi International Inc. Stock
Option Plan)

Agreement between the Company and Lawrence A.
Kraft, dated February 4, 2003

Amendment to Agreement between the Company and
Lawrence A. Kraft dated July 30, 2007

Agreement between the Company and Joel K. Young
dated July 30, 2007

Incorporated by
Reference

Exhibit
10(n)

10(o)

10(p)

31(a)

31(b)

Description

Form of Notice of Grant of Stock Options and Option
Agreement (for grants under Digi International Inc. 2000
Omnibus Stock Plan before January 26, 2010)

Form of Notice of Grant of Stock Options and Option
Agreement (amended form for grants under Digi
International Inc. 2000 Omnibus Stock Plan on or after
January 26, 2010)

English Language Summary of Sale and Leaseback
Agreement dated February 18, 2008 between Digi
International GmbH and Deutsche Structured Finance
GmbH & Co. Alphard KG.

Code of Ethics

Subsidiaries of the Company

Consent of Independent Registered Public Accounting
Firm

Powers of Attorney

Rule 13a-14(a)/15d-14(a) Certification of Chief
Executive Officer

Rule 13a-14(a)/15d-14(a) Certification of Chief Financial
Officer

Section 1350 Certification

Page
Incorporated by
Reference

Incorporated by
Reference

Filed Electronically

(This page intentionally left blank)

• Digi introduced the ConnectPort® X2 for Smart Energy gateway. It is the industry’s first gateway that

connects, controls, or gathers data from ZigBee® Smart Energy devices equally well before or with Smart

Meter deployments.

• Digi introduced the ConnectPort® X2 with Wireless M-Bus gateway family targeting Smart Grid

applications in Europe.

• We introduced the ConnectPort® X3, a low-cost, programmable cellular gateway for monitoring and

tracking remote assets. Both the ConnectPort® X3 and ConnectPort® X5, as well as all other Digi gateways
are integrated with the iDigi® platform.

Joseph T. Dunsmore
Chairman, President and Chief Executive Officer

Stockholder and Investor Information

Stock Listing

Stock Listing
The Company’s Common Stock trades on The
NASDAQ Stock Market LLC under the symbol
“DGII.”

Since July 3, 2006 the Company’s Common Stock has
traded on the NASDAQ Global Select Market tier of
The NASDAQ Stock Market LLC and prior to that
time was traded on the NASDAQ National Market tier.

High and low sale prices for each quarter during the
years ended September 30, 2010 and 2009, as reported
on The NASDAQ Stock Market LLC, were as follows:

Stock Prices

2010 first
High $9.57
$6.99
Low

second
$ 12.32
$ 8.87

third
$ 11.48
$ 7.86

fourth
$ 9.55
$ 7.29

2009 first
second
High $11.10 $ 8.98
$ 6.88 $ 6.26
Low

third
$ 10.72
$ 6.40

fourth
$ 10.87
$ 8.11

Dividend Policy

The Company does not have a Dividend Reinvestment
Plan or a Direct Stock Purchase Plan.

Stockholder Information

Transfer Agent and Registrar
Wells Fargo Bank of Minnesota, N.A.
Wells Fargo Shareowners Services
161 N. Concord Exchange Street
South St. Paul, MN 55075
651-450-4064
800-468-9716

Legal Counsel
Faegre & Benson LLP
2200 Wells Fargo Center
Minneapolis, MN 55402-3901

Independent Public Accountants
PricewaterhouseCoopers LLP
225 South Sixth Street, Suite 1400
Minneapolis, MN 55402

Annual Meeting
The Company’s Annual Meeting of Stockholders
will be held on Thursday, January 20, 2011, at 3:30
p.m., at the Marriott Southwest, 5801 Opus Parkway,
Minnetonka, Minnesota.

Investor Relations
A copy of the Company’s Form 10-K, filed with the
Securities and Exchange Commission, is available free
upon request. Contact:

Investor Relations Administrator
Digi International Inc.
11001 Bren Road East
Minnetonka, MN 55343
952-912-DIGI
ir@digi.com

To Our Stockholders,

Our progress in fiscal 2010 and goals for the future are best categorized in four main areas:

4. Growth of Targeted Vertical Markets
One of our most important developments for the year was increasing momentum in our targeted vertical markets
and especially in Smart Energy:

• Comverge announced an extension of their contract with TXU Energy to deploy their Demand Response

solution to 100,000 more houses. The vast majority of these deployments will be with the Digi gateway and
iDigi® platform.