TP-Link TL-WN422G User manual

TL-WN422G
High-Gain Wireless USB Adapter
Rev:1.0.3
1910010143

COPYRIGHT & TRADEMARKS
Specifications are subject to change without notice. is a registered
trademark of TP-LINK TECHNOLOGIES CO., LTD. Other brands and product names are
trademarks or registered trademarks of their respective holders.
No part of the specifications may be reproduced in any form or by any means or used to
make any derivative such as translation, transformation, or adaptation without permission
from TP-LINK TECHNOLOGIES CO., LTD. Copyright © 2008 TP-LINK TECHNOLOGIES
CO., LTD. All rights reserved.
http://www.tp-link.com

FCC STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to pro-vide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not in-stalled
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
¾Reorient or relocate the receiving antenna.
¾Increase the separation between the equipment and receiver.
¾Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.
¾Consult the dealer or an experienced radio/ TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may
cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
FCC RF Radiation Exposure Statement
This device has been tested for compliance with FCC RF Exposure (SAR) limits in the
typical laptop computer configuration and this device can be used in desktop or laptop
computers. This device cannot be used with handheld PDAs (personal digital assistants).
This device and its antenna must not be co-located or operated in conjunction with any
other antenna or transmitter. SAR measurements are based on a 5mm spacing from the
body and that compliance is achieved at that distance.

CE Mark Warning
This is a class B product. In a domestic environment, this product may cause radio
interference, in which case the user may be required to take adequate measures.
National Restrictions
2400.0-2483.5 MHz
Country Restriction Reason/remark
Bulgaria None General authorization required for outdoor
use and public service
France
Outdoor use limited to 10
mW e.i.r.p. within the band
2454-2483.5 MHz
Military Radiolocation use. Refarming of the 2.4
GHz band has been ongoing in recent years to
allow current relaxed regulation. Full
implementation planned 2012
Italy None If used outside of own premises, general
authorization is required
Luxembourg None General authorization required for network and
service supply(not for spectrum)
Norway Implemented
This subsection does not apply for the
geographical area within a radius of 20 km from
the centre of Ny-Ålesund
Russian Federation None Only for indoor applications
Note: Please don’t use the product outdoors in France.

TP-LINK TECHNOLOGIES CO., LTD.
South Building, No.5 Keyuan Road, Central Zone, Science & Technology Park, Nanshan,
Shenzhen, P. R. China
DECLARATION OF CONFORMITY
For the following equipment:
Product Description: High-Gain Wireless USB Adapter
Model No.: TL-WN422G
Trademark: TP-LINK
We declare under our own responsibility that the above products satisfy all the technical
regulations applicable to the product within the scope of Council Directives:
Directives 1999 / 5 / EC, Directives 2004 / 108 / EC, Directives 2006 / 95 / EC
The above product is in conformity with the following standards or other normative documents
Radio ETSI EN 300 328
EMC ETSI EN 301 489-1
ETSI EN 301 489-17
Health & Safety EN 60950-1
EN 50392
The product carries the CE Mark:
Signature:
Zhao Jianjun
Director of International Business
Date of Issue: 2008-12-12

CONTENTS
Package Contents........................................................................................................... 1
Chapter 1 Introduction................................................................................................ 2
1.1 Overview of the Product ..............................................................................2
1.2 Main Features.............................................................................................. 2
1.3 LED Status ..................................................................................................2
1.4 System Requirements .................................................................................3
1.5 Network Configuration.................................................................................3
Chapter 2 Installation Guide....................................................................................... 5
2.1 Before You Begin ........................................................................................5
2.2 Hardware Installation................................................................................... 5
2.3 Installation for Windows XP.........................................................................5
2.4 Installation for Windows Vista......................................................................8
Chapter 3 Uninstall Guide......................................................................................... 13
3.1 Uninstall the utility software through Control Panel ................................... 13
3.2 Uninstall the utility software through Programs.......................................... 14
3.3 Uninstall the driver software from your PC ................................................ 16
Chapter 4 Software Configuration ........................................................................... 17
4.1 Station Mode Configuration ....................................................................... 17
4.1.1 Current Network Information ...........................................................17
4.1.2 More Settings ..................................................................................17
4.2 Access Point mode configuration .............................................................. 25
Chapter 5 Examples for Application........................................................................ 27
5.1 Example one: Configuration of WEP Encryption ....................................... 27
5.2 Configuration of PSP Mode....................................................................... 28
Chapter 6 Configuration for Windows Vista ........................................................... 33
Appendix A: Glossary................................................................................................... 36
Appendix B: Specifications.......................................................................................... 38

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Package Contents
The following items should be found in your package:
¾One TL-WN422G High-Gain Wireless USB Adapter
¾One USB extension cable
¾One TL-WN422G High-Gain Wireless USB Adapter Resource CD, including:
•Drivers and Utility
•User Guide
•Other Helpful Information
)Note:
Make sure that the package contains the above items. If any of the listed items are
damaged or missing, please contact with your distributor.

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Chapter 1 Introduction
Thank you for choosing the TL-WN422G High-Gain Wireless USB Adapter!
1.1 Overview of the Product
The adapter is a USB 2.0 pen-size wireless adapter supporting IEEE 802.11b/g 2.4GHz
radio operation. It provides high-speed wireless connection with data rate up to 54Mbps,
and wireless roaming allows the user to move among different AP without losing the
current connection. The adapter provides excellent security features, including TKIP, AES,
WPA, and up to 256 bit WEP encryption security, which makes the network almost
impenetrable.
Featuring high performance of fast transmission rates, simple installation and adaptability,
as well as strong security, the TL-WN422G High-Gain Wireless USB Adapter is the perfect
solution for personal and small business use.
1.2 Main Features
¾Complies with IEEE 802.11b and IEEE 802.11g Standards.
¾Provides 64/128/256 bit WEP Encryption.
¾Supports WPA, WPA2, IEEE 802.1X, TKIP, AES.
¾Supports 54/48/36/24/18/12/9/6Mbps or 11/5.5/2/1Mbps wireless LAN data transfer
rates.
¾USB 2.0 interface and compatible with USB 1.1.
¾High Speed Data Rate Up to 54Mbps.
¾Supports Windows 98, ME, 2000, XP, 2003, Vista.
¾Simulates AP Mode, And Supports PSP connection.
1.3 LED Status
The TL-WN422G High-Gain Wireless USB Adapter has a LED indicator and a built-in
antenna for wireless connectivity.
LED Indicator:
¾Ad-hoc Mode: Solid Green, whether the wireless device is connected or not.
¾Infrastructure Mode: Solid green while connected, and blinking during activity

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1.4 System Requirements
The following are the minimum system requirements in order to use the TL-WN422G
High-Gain Wireless USB Adapter.
¾PC/AT compatible computer with a USB interface.
¾Windows 98/ME/2000/XP/2003/Vista operating system.
(Windows 98/ME don’t support USB 2.0, the performance could influenced)
1.5 Network Configuration
The following part will depict the possible wireless LAN PC card network configurations,
which helps you to get a better understanding of how the wireless LAN products work
together in a wireless network.
The wireless LAN products can be configured as:
Ad-hoc (peer-to-peer) Mode
This is the simplest network configuration with several computers equipped with the PC
Cards that form a wireless network whenever they are within range of one another. In
ad-hoc mode, each client is peer-to- peer, would only have access to the resources of the
other client and does not require an access point. This is the easiest and least expensive
way for the SOHO to set up a wireless network.
The image below depicts a network in ad-hoc mode.
Figure 1-1 Ad-hoc mode.
Infrastructure Mode
The infrastructure mode requires the use of an access point (AP). In this mode, all wireless
communication between two computers has to be via the AP. It doesn’t matter if the AP is
stand-alone or wired to an Ethernet network. If used in stand-alone, the AP can extend the
range of independent wireless LANs by acting as a repeater, which effectively doubles the
distance between wireless stations.

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The image below depicts a network in infrastructure mode.
Figure 1-2 Infrastructure mode.

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Chapter 2 Installation Guide
2.1 Before You Begin
The operating distance range of your wireless connection can vary significantly depending
on the physical position of the wireless devices. Factors that can weaken signals by getting
in the way of your network’s radio waves are metal appliances or obstructions, and walls.
Typical ranges vary base on the types of materials and background RF (radio frequency)
noise in your home or office.
For best performance of your wireless network, you are suggested to:
1. Place your computer with this wireless card near the operating wireless router.
2. Avoid redundant obstacles and interference between the wireless devices.
3. Keep your product far from electrical devices or appliances that generate RF noise,
such as microwave ovens, 2.4 GHz cordless phone.
2.2 Hardware Installation
There are two ways to install the Adapter:
1. Plug the Adapter directly to the USB port on your computer.
2. Connect the Adapter and your computer with the extension USB cable attached in
package.
)Note:
Once the Adapter is firmly in place, the Found New Hardware Wizard screen will pop up.
2.3 Installation for Windows XP
Follow the steps below in order to install the TL-WN422G High-Gain Wireless USB Adapter
drivers:
1. Insert the Resource CD into your CD-ROM drive, and open the folder named
TL-WN422G. Then double-click Setup.exe in the proper folder according to your
operating system to start the installation.
Once the setup begins you will see the Install Shield Wizard, as the image depicts as
below.

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Figure 2-1 Install driver wizard
2. Click on the Next button to continue.
3. Select the location where you would like the driver installed. Click on the Browse
button to change the directory, or click on the Next button to continue using the default
directory.
Figure 2-2 Install Shield—Choose Destination Location

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4. Wait a few minutes until the files are copied to the computer.
Figure 2-3 Install Shield—Setup Status
5. Click on the Finish button to complete the installation.
Figure 2-4 Installation Complete
Now, carefully insert the device into the USB port of your computer. Windows will

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automatically detect the device and display the icon and below in the taskbar.
2.4 Installation for Windows Vista
After you complete the hardware installation, follow the steps below in order to install the
TL-WN422G Wireless USB Adapter drivers for Windows Vista:
1. Insert the Resource CD into your CD-ROM drive, right-click the Computer icon as
shown in the Figure 2-5, select the Properties.
Figure 2-5 Begin installation for Windows Vista
2. Select Device Manager as shown in Figure 2-6, then select Continue in the next
screen.
Figure 2-6 Select Device management

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3. Right-click the adapter icon “USB2.0 VLAN” and select “Update Driver Software” to
proceed.
Figure 2-7 Driver management
4. Select the method to update the driver software (see Figure 2-8). If you want the
system to search the software automatically, select the first type. Otherwise select
“Browse my computer for driver software” to install the software (best way).

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Figure 2-8 Select the method to install
5. Click the Browse button in the next screen to select the file which contains the driver
software for the adapter. After that, click Next to proceed.
Figure 2-9 Select the driver software
)Note:
Vista X86 is designed for the Vista of 32bit, Vista X64 is designed for the Vista of 64bit,
please select the right one according to your current operating system.
6. After that, the installation will proceed as shown in Figure2-10.

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Figure 2-10 Installing
)Note:
During the installation, you will see the warning box as shown in figure 2-11, please select
“Install this driver software anyway” to proceed.
Figure 2-11 warning for security
7. Finally, click Close to finish the installation.

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Figure 2-12 Complete the installation

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Chapter 3 Uninstall Guide
If the device installation is fails by some mistake, the best way to solve the problem is to
completely uninstall the device and utility, and then rerun the “Setup.exe”. The following
are three methods to uninstall the Drivers and Utility.
)Note:
TL-WN422G doesn’t have utility for windows Vista, so you only need to follow the section
3.3 to uninstall the driver from your computer.
3.1 Uninstall the utility software through Control Panel
Follow the steps below in order to uninstall the Drivers and Utility:
1. Click on Start > Settings > Control Panel > Add or Remove Programs
2. You will then see the following window. Select the TL-WN422G Wireless Utility and
then click on Remove.
Figure 3-1 Add or Remove Programs
3. Click on the OK button to confirm the Uninstalling process.

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Figure 3-2 Confirm Uninstall
4. The process will then remove TL-WN422G Wireless Utility and the drivers from your
computer. Choose the first option, then click on the OK button to complete the
uninstall and restart your computer.
Figure 3-3 Uninstall finished
3.2 Uninstall the utility software through Programs
Follow the steps below in order to uninstall the Drivers and Utility:
¾Click on Start > programs > TP-LINK > TL-WN422G Wireless Utility > Uninstall
TL-WN422G Wireless Utility.