Sierra Wireless AirCard 250U User manual

AirCard 250U Modem
User Guide (Windows)
2131331
Rev 1.0

Preface
Rev 1.0 May.10 3
Important
Notice Due to the nature of wireless communications, transmission and reception of data
can never be guaranteed. Data may be delayed, corrupted (i.e., have errors) or be
totally lost. Although significant delays or losses of data are rare when wireless
devices such as the Sierra Wireless modem are used in a normal manner with a
well-constructed network, the Sierra Wireless modem should not be used in
situations where failure to transmit or receive data could result in damage of any
kind to the user or any other party, including but not limited to personal injury,
death, or loss of property. Sierra Wireless accepts no responsibility for damages
of any kind resulting from delays or errors in data transmitted or received using
the Sierra Wireless modem, or for failure of the Sierra Wireless modem to
transmit or receive such data.
Safety and
Hazards Do not operate the Sierra Wireless modem in areas where blasting is in progress,
where explosive atmospheres may be present, near medical equipment, near life
support equipment, or any equipment which may be susceptible to any form of
radio interference. In such areas, the Sierra Wireless modem MUST BE
POWERED OFF. The Sierra Wireless modem can transmit signals that could
interfere with this equipment.
Do not operate the Sierra Wireless modem in any aircraft, whether the aircraft is
on the ground or in flight. In aircraft, the Sierra Wireless modem MUST BE
POWERED OFF. When operating, the Sierra Wireless modem can transmit
signals that could interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the aircraft is on the
ground and the door is open. Sierra Wireless modems may be used at this time.
The driver or operator of any vehicle should not operate the Sierra Wireless
modem while in control of a vehicle. Doing so will detract from the driver or
operator's control and operation of that vehicle. In some states and provinces,
operating such communications devices while in control of a vehicle is an offence.
Limitation of
Liability The information in this manual is subject to change without notice and does not
represent a commitment on the part of Sierra Wireless. SIERRA WIRELESS AND
ITS AFFILIATES SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL
DIRECT, INDIRECT, SPECIAL, GENERAL, INCIDENTAL, CONSEQUENTIAL,
PUNITIVE OR EXEMPLARY DAMAGES INCLUDING, BUT NOT LIMITED TO,
LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR REVENUE
ARISING OUT OF THE USE OR INABILITY TO USE ANY SIERRA WIRELESS
PRODUCT, EVEN IF SIERRA WIRELESS AND/OR ITS AFFILIATES HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR THEY ARE
FORESEEABLE OR FOR CLAIMS BY ANY THIRD PARTY.
Notwithstanding the foregoing, in no event shall Sierra Wireless and/or its
affiliates aggregate liability arising under or in connection with the Sierra Wireless
product, regardless of the number of events, occurrences, or claims giving rise to
liability, be in excess of the price paid by the purchaser for the Sierra Wireless
product.

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Patents Portions of this product may be covered by some or all of the following US
patents:
5,515,013 5,629,960 5,845,216 5,847,553 5,878,234 5,890,057 5,929,815 6,169,884
6,191,741 6,199,168 6,339,405 6,359,591 6,400,336 6,516,204 6,561,851 6,643,501
6,653,979 6,697,030 6,785,830 6,845,249 6,847,830 6,876,697 6,879,585 6,886,049
6,968,171 6,985,757 7,023,878 7,053,843 7,106,569 7,145,267 7,200,512 7,295,171
7, 287,162 D442,170 D459,303 D599,256 D560,911
and other patents pending.
This product includes technology licensed from QUALCOMM®3G.
Manufactured or sold by Sierra Wireless or its licensees under one or more
patents licensed from InterDigital Group.
Copyright ©2010 Sierra Wireless. All rights reserved.
Trademarks AirCard®and Watcher® are registered trademarks of Sierra Wireless. Sierra
Wireless, AirPrime, AirLink, AirVantage, TRU-Locateand the Sierra
Wireless logo are trademarks of Sierra Wireless.
Windows®and Windows Vista®are registered trademarks of Microsoft
Corporation.
Macintosh and Mac OS are registered trademarks of Apple Inc., registered in the
U.S. and other countries.
QUALCOMM®is a registered trademark of QUALCOMM Incorporated. Used
under license.
Other trademarks are the property of their respective owners.
Contact
Information
Consult our website for up-to-date product descriptions, documentation,
application notes, firmware upgrades, troubleshooting tips, and press releases:
www.sierrawireless.com
Sales Desk: Phone: [phone]
Hours: 8:00 AM to 5:00 PM Pacific Time
E-mail: [email protected]
Post: Sierra Wireless
13811 Wireless Way
Richmond, BC
Canada V6V 3A4
Fax: [phone]
Web: www.sierrawireless.com

Preface
Rev 1.0 May.10 5
Revision
History Revision
number Release date Changes
1.0 2010 Initial release

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Rev 1.0 May.10 7
Contents
Introducing the AirCard 250U modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Feature summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wireless modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TRU-Install . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
TRU-Locate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
CDMA 3G services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Watcher auto-update . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Additional features of the modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Package contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
System components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Your host computing device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
The USB modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
The modem drivers and enabling software . . . . . . . . . . . . . . . . . . . . . . .13
CDMA service provider account . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
The CDMA wireless network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Care and maintenance of your modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
The AirCard 250U software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Account activation and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Installing the modem and software. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Removing the modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Activation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Account configuration procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Activation Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Manual activation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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Watcher Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Starting and closing Watcher. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Components of the Watcher window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Window controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Interpreting icons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Minimized icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
GPS Monitor window. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Online Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
LED operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Radio frequency and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . 32
Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Important safety/compliance information. . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Glossary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

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1
1: Introducing the AirCard 250U modem
•Welcome
•Feature summary
•Package contents
•System
components
•Care and
maintenance of
your modem
Note: This document applies to you, only if your wireless device is the
AirCard 250U modem from Sierra Wireless.
Welcome
The Sierra Wireless AirCard 250U modem is a wireless USB modem
for cellular and PCS networks, and the GPS frequency band. The
modem enhances the functionality of your mobile computing device
by adding 2-way messaging and high-speed mobile data in extended
areas, compared to wireless local area networks.
This modem allows you to do the following (subject to feature
availability), without using a wireline phone or network:
•Connect to the Internet, VPN and corporate networks
•Send and receive large e-mail messages
•Send and receive SMS messages
•Use location-based services
•Conduct video-conferencing
•Access streaming, real-time media
•Play games online
Note: You can view this guide online or print it to keep on hand. If you're
viewing it online, simply click a topic in the Table of Contents, or a page
number in the Index, or any page reference or section reference. (Most text
that is blue is a clickable link.) The PDF automatically displays the appro-
priate page.
Feature summary
Note: For step-by-step
instructions to access
features of the modem,
consult the online help
available with the
Watcher®software
(page 28).
The USB modem is designed to provide a wide range of capabilities
using CDMA and WiMAX network technology. Implementation of
these features depends on the particular service provider and
account features you have chosen.

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Some features described in this manual may not be supported by your service
provider or may not be available with your network account. For details of the
services and accounts available, contact your service provider.
Wireless modem
Once installed and configured, the modem can connect to the CDMA network or
WiMAX network automatically. You just insert the modem, allow Watcher to
autolaunch and authenticate your account on the network, then launch your
Internet browser (which you can also configure in Watcher to launch
automatically)—you’re online!
Alternatively, you can make a high-speed data connection without running
Watcher—simply by launching whatever application you want to use (such as
your web browser or e-mail application). For details, see the online help topic
“Autoconnect behaviour”.
The modem also allows you to dial up a modem (such as a corporate server).
TRU-Install
TRU-Install™ is a Sierra Wireless feature that installs the necessary software and
drivers the first time you insert the modem into your computer. An installation CD
is not required.
TRU-Locate
With TRU-Locate™, you can use location-based services (GPS) to query, for
example, the network for information on points of interest (POI) that are near your
current location, or display driving instructions.
Note: TRU-Locate is subject to feature availability.
Your modem requires an unobstructed view of GPS satellites (in the sky), and,
like any other GPS device, might not perform well within forested areas or near
tall buildings.
Depending on your account, you may be charged for each position fix or after you
have performed a certain number of fixes. For details, contact your service
provider.
Depending on the mechanism that the network and your modem use to obtain
location information, GPS may not be supported:
•If Network Mode is set to “EVDO Only”
•If you're roaming
•If you do not have network coverage
•Due to other reasons.
If you’re having problems using GPS, contact your service provider.

Rev 1.0 May.10 11
CDMA 3G services
The modem can operate over a type of wireless network called CDMA (Code
Division Multiple Access).
CDMA 3G technology provides a variety of connectivity features, depending on
your service provider and account:
•1x-EVDO Rev. A supports Internet connections with data rates up to
3.1 Mbps (downlink from the network) and 1.8 Mbps (uplink to the network).
Average data rates are 450-800 Kbps (downlink from the network) and
300-400 Kbps (uplink to the network). Actual speed depends on the network
conditions.
•1x-EVDO Rev. 0 supports Internet connections with data rates up to
2.4 Mbps (downlink from the network) and 153 Kbps (uplink to the network).
Average data rates are 400-700 Kbps (downlink from the network) and
40-80 Kbps (uplink to the network). Actual speed depends on the network
conditions.
•1X supports Internet connections with data rates up to 153 Kbps. Actual
speed depends on the network conditions.
Once the connection is established, you can open your browser and connect to
any web site that is accessible through the Internet, or access other Internet
services (such as e-mail).
The connection is “active” when data transmission is occurring. If data
transmission stops for a period of time (determined by the network), the
connection becomes dormant.
•Circuit switched (dial-up) data, using the earlier CDMA IS-95 specification,
supports data connections to any dial-in service at rates up to 14.4 Kbps.
•QNC (Quick Net Connect) provides a simplified way to dial into an Internet
connection (using circuit switched data) where 3G (1xEV-DO or 1X) high-
speed packet service is not available.
•SMS (Short Message Service) allows you to send and receive short text
messages using the modem.
Watcher auto-update
Choose to have the latest features and updates for your modem and Watcher
software installed automatically. Easily set your own preferences for when
updates are downloaded. Set a schedule that automatically checks daily, weekly,
monthly or not at all. Updates can be over Ethernet or WiFi to save WWAN
overlimit or roaming charges.
•Keeps your firmware, drivers and Watcher software up to date.
•Allows you to set a specific schedule that can be set to check for updates
such as daily, weekly, monthly or not at all.
•On demand manual checks can also be completed.
•A download pause-and-resume capability pauses the update download when
your computer is in use and resumes it during idle time so the user
experience isn’t affected.
•Updates can be over any connection—not just the WWAN connection.

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Additional features of the modem
Beyond the features of the CDMA network and WiMAX network, the modem
provides additional software features:
•PIN security code to protect your modem and account from unauthorized use.
•A wizard to assist with activating your CDMA account.
•Sound options to customize ringtones for SMS messages.
•A Call Log to track outgoing calls and determine the amount of data trans-
ferred.
Package contents
Your package contains the following items:
•AirCard 250U modem
•Quick Start Guide
•Carry pouch
To install the modem drivers and software, you do not need an installation CD.
Your modem uses the Sierra Wireless TRU-Install feature. The drivers and
software are installed when you insert the modem into your computer and go
through the software installation; an installation CD is not required.
System components
Your modem is just one part of a system designed to provide you with a wide
range of communication features. Every component of the system is needed to
enable these capabilities.
Your host computing device
Your notebook or desktop computer hosts the modem hardware and runs the
communication software: your web browser or e-mail application, and Watcher—
the enabling software for the modem.
You may also have other software on your computer that can be used wirelessly
with the modem, such as: file transfer applications (FTP), chat or instant
messaging, a VPN (Virtual Private Network) client, client software for a corporate
server application.
The USB modem
The modem provides your computer with a connection to the CDMA or WiMAX
wireless network.
The modem fits into a USB slot available on most notebook and desktop
computers.

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Every CDMA network operates on one of three radio frequency bands. As a dual-
band product, the modem operates on two of these bands (see page 32),
providing a wide coverage area.
The modem drivers and enabling software
The modem drivers and enabling software (Watcher) monitor and manage your
wireless connections.
Your modem uses the Sierra Wireless TRU-Install feature—the drivers and
software are installed when you insert the modem into your computer.
The device driver software enables the modem to work with your computer’s
operating system.
Using the Watcher software, you can manage the modem and monitor your
connections.
For step-by-step instructions to access features of Watcher, use the application’s
online help.
CDMA service provider account
Companies that operate CDMA networks and provide access to these networks
are called service providers. To use the modem, you must have an account with a
CDMA service provider.
Note: You can use the
Lock Modem feature to
prevent others from using
your account, should your
modem be stolen.
Each service provider has its own pricing options. There may be flat rate
accounts, which provide you a maximum number of minutes of network usage for
a fixed monthly fee. There may be accounts for which you are charged for
network usage by the minute or by the amount of data transmitted.
Your account may include a variety of other services such as SMS messaging or
location-based services.
Each modem has been provisioned at the factory for use with a particular service
provider. This sets the modem to use particular radio channels and enables
services specific for that provider.
The process of setting up your account is called activation. Activation involves
action by the service provider and configuration of the modem.
The procedure to configure (activate) your modem is covered in Activation on
page 21.
The CDMA wireless network
Note: More information
about CDMA networks is
available on the CDMA
Development Group web
site, www.cdg.org .
This is the worldwide infrastructure providing the radio coverage that allows you
to stay connected. Made up of radio towers and a variety of network switches,
routers, and servers, the network is an interconnection of many service providers.

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Note: Most service
providers have coverage
maps on their web sites.
There are CDMA networks that operate in the frequency bands supported by the
modem throughout North America and parts of Latin America, Asia, and New
Zealand. However, each service provider operates a network that covers a limited
geographical area within the overall CDMA coverage area.
Note: The fee for service
is usually higher when you
are roaming (connecting to
a network other than the
one belonging to your
service provider).
Most service providers have “roaming” agreements with other service providers,
so that they can offer service outside of the coverage area of their own networks.
For example, assuming you live in Vancouver (Canada), and travel frequently to
Seattle (United States), you can obtain an account with a Vancouver service
provider that has a roaming agreement with a service provider in Seattle. You
would then have local service in Vancouver, and roaming service in Seattle.
Care and maintenance of your modem
As with any electronic device, the modem must be handled with care to ensure
reliable operation. Follow these guidelines in using and storing the modem:
•The modem should fit easily into your USB slot. Forcing the modem into a slot
may damage connector pins.
•When inserting or removing the modem, always grip it by the sides rather
than the end.
•Protect the modem from liquids, dust, and excessive heat.
•When not installed in your computer, store the modem in a safe place.

Rev 1.0 May.10 15
2
2: Getting Started
•The AirCard 250U
software
•Account activation
and configuration
Before you can begin using the modem, you must:
1. Insert the modem, to install the enabling software and drivers.
2. Activate an account and configure the modem to use your
account (unless the modem has been pre-activated).
This section provides an overview of this process.
The AirCard 250U software
The modem comes with the following software:
•Watcher application that you use to manage the modem and
monitor your connections on your computer
•The driver software that provides the interface between the
modem and your Windows operating system
Detailed instructions for installing the modem and its software are
provided in Installation on page 17.
Account activation and
configuration
To use the modem, you must have an account with a CDMA or
WiMAX service provider. The process of setting up an account is
called activation.
If you purchased the modem directly from a service provider, you
may already have an account; your modem may be pre-activated.
Otherwise, run the Watcher software and the Activation Wizard,
which guides you through the activation and configuration process.
(Depending on your configuration, the software and the activation
procedure may start automatically.)
Configuring the modem involves setting the phone number assigned
by your service provider and may involve entering other network
parameters and settings such as a user name and password to
access services.
Your service provider may need to know:
•The billing information to use to collect payment for your network
usage.
•The ESN (Electronic Serial Number) or MEID (Mobile Equipment
Identifier) assigned to your modem during the manufacturing
process. (The ESN or MEID is printed on a label on the modem

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and can be displayed in the software.) This number is used to help authen-
ticate your account when you connect for service.
You require from your service provider:
•An activation code that gives you access to configure the account.
•A phone number for your modem.
•Additional information specific to your service provider such as:
·A user ID (username) and password to authenticate your network
connection.
·A SID (System IDentifier) that identifies your home network area and is
used together with your phone number to determine if you are “home” or
“roaming”.

Rev 1.0 May.10 17
3
3: Installation
•System
requirements
• Installing the
modem and
software
•Removing the
modem This chapter guides you through the steps necessary to install the
modem on a notebook or desktop computer.
The basic steps are:
1. Insert the modem into the USB slot to install the modem drivers
and software.
2. If the modem has not been pre-activated, use the Activation
Wizard to configure the modem (as described in Activation on
page 21).
Before you begin the installation process, ensure your computer
meets the requirements described below.
System requirements
The modem is supported on notebook and desktop computers
running:
•Windows 7
•Windows Vista
•Windows XP (Home and Professional versions) with Service
Pack 2 or later
•Windows 2000 with Service Pack 4 and Update Rollup 1
Installing the modem and software
Note: If you’re running Windows XP, you may require administrative privi-
leges, depending on the Windows XP installation.
If you’re running Windows 7, Windows Vista or Windows 2000, you must be
logged in with administrative privileges to install the modem software.
If you’re running Windows 2000, your computer might be restarted, as part of
the installation process; save any open documents.
To install Watcher and the modem drivers:
1. If your computer has a WiFi or Bluetooth adapter, turn it off. (For
instructions, see the user guide or online Help of your computer).

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2. Remove the protective cap from the USB connector of the modem.
Note: Do not forcefully
insert the modem. This
may damage the
connector pins.
3. Gently insert the modem into the USB slot.
4. If the TRU-Install window is not displayed, in Windows Explorer browse to the
entry (under My Computer), then browse to the Win folder and
run Setup.exe; alternatively, if you’re running Windows Vista and the AutoPlay
window is displayed, click Run setup.exe.
5. In the TRU-Install window, click OK.
6. In the “Welcome to the InstallShield Wizard” window, select Install to launch
the InstallShield®Wizard.
7. If the Open With... window appears, cancel the installation (your computer is
missing some files required for the installation). Search for Instmsiw.exe (if
you’re running Windows 2000) among the downloads at www.microsoft.com.
Install the file on your computer, remove the modem from your computer, then
rerun the installation.
8. If the Ikernel Application Error window appears:
a) Cancel the installation.
b) Download the file:
http://support.installshield.com/kb/files/Q108312/
ikernelupdate.exe.
c) Install the file on your computer, remove the modem from your computer
(see page 19), then rerun the installation.
9. Use the Next and Back buttons to navigate through the wizard noting the
following:
·To proceed with the installation, you must click I accept the terms in the license
agreement to indicate your acceptance of the terms of the license
agreement.
Windows detects the modem and installs the drivers for it. This may take a few
minutes. Once completed, the system tray may display the message “Your
devices are ready to use“ or “Your new hardware is installed and ready to
use”:
10. If you are prompted to restart your computer:
a) Save any open documents.
b) Select the option to restart your computer.
c) Wait until your computer restarts and Windows is ready.
11. When you are notified that the installation is complete, click Finish.
12. If Watcher has not started automatically, start it: double-click the Watcher icon
on your desktop.

Rev 1.0 May.10 19
13. Proceed to configure the modem to use your account (if it was not pre-
activated). See Activation on page 21.
Removing the modem
To remove the modem:
1. Close Watcher if it is open.
2. Click the Safely Remove Hardware icon in the system tray to display the
option to stop the device.
3. Click the Safely remove USB Mass Storage Device entry (Windows Vista or
Windows XP) or Stop USB Mass Storage Device and Stop Sierra Wireless
TBD EVDO Network Adapter entries (Windows 2000) for the modem.
4. If a dialog box appears notifying you that it is safe to remove the device, click
OK.
5. Pull the device out of the slot by gripping both sides of the device and pulling
the device straight out.
Windows Vista Windows XP Windows 2000

AirCard 250U Modem - User Guide
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