TP-Link TL-WN781ND User manual

TL-WN781ND
150Mbps Wireless Lite N PCI Express Adapter
Rev: 1.0.1
1910010315

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 © 2010 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 provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed 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:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•Consult 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.
Note: The manufacturer is not responsible for any radio or tv interference caused by unauthorized
modifications to this equipment. Such modifications could void the user’s authority to operate the
equipment.
FCC RF Radiation Exposure Statement:
This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled
environment. This device and its antenna must not be co-located or operating in conjunction with
any other antenna or transmitter.
“To comply with FCC RF exposure compliance requirements, this grant is applicable to only
Mobile Configurations. The antennas used for this transmitter must be installed to provide a
separation distance of at least 20 cm from all persons and must not be co-located or operating in
conjunction with any other antenna or transmitter.”

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
This device is intended for home and office use in all EU countries (and other countries following
the EU directive 1999/5/EC) without any limitation except for the countries mentioned below:
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
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: 150Mbps Wireless Lite N PCI Express Adapter
Model No.: TL-WN781ND
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
The above product is in conformity with the following standards or other normative documents:
ETSI EN 300 328 V1.7.1: 2006
ETSI EN 301 489-1 V1.8.1:2008 & ETSI EN 301 489-17 V1.3.2:2008
EN60950-1:2006
EN62311:2008
Person is responsible for marking this declaration:
Yang Hongliang
Product Manager of International Business

CONTENTS
Package Contents .................................................................................................... 1
Chapter 1 Introduction......................................................................................... 2
1.1 Overview of the product ...................................................................................................2
1.2 Features...........................................................................................................................2
1.3 LED Status.......................................................................................................................3
Chapter 2 Installation Guide................................................................................ 4
2.1 Hardware Installation........................................................................................................4
2.2 Software Installation.........................................................................................................4
2.2.1 Overview........................................................................................................................... 4
2.2.2 Software Installation for Windows XP............................................................................... 4
2.2.3 Software Installation for Windows Vista ........................................................................... 9
Chapter 3 Configuration for Windows XP........................................................ 14
3.1 Current Status................................................................................................................14
3.2 Profile Management.......................................................................................................16
3.2.1 Add or Modify a Configuration Profile............................................................................. 16
3.2.2 Remove a profile............................................................................................................. 21
3.2.3 Switch another Profile..................................................................................................... 21
3.2.4 Export a Profile...............................................................................................................21
3.2.5 Import a Profile ...............................................................................................................21
3.2.6 Scan Available Networks................................................................................................ 22
3.2.7 Auto Profile Selection Management............................................................................... 23
3.3 Diagnostics.....................................................................................................................24
3.3.1 Check Driver Information................................................................................................ 24
3.3.2 Check Receive and Transmit Statistical Information...................................................... 25
Chapter 4 QSS configuration............................................................................ 26
I

4.1 PBC (Push Button Configuration) method......................................................................27
4.2 PIN method....................................................................................................................29
4.2.1 Enter a PIN into your AP device..................................................................................... 29
4.2.2 Enter the PIN from your AP device................................................................................. 31
Appendix A: Specifications................................................................................... 32
Appendix B: Glossary............................................................................................ 33
II

Package Contents
The following contents should be found in your box:
¾One TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
¾Quick Installation Guide
¾One Resource CD for TL-WN781ND, including:
•TP-LINK Wireless Client Utility (TWCU) and Drivers
•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.
Conventions:
The ‘Adapter’ mentioned in this user guide stands for TL-WN781ND 150Mbps Wireless Lite N PCI
Express Adapter without any explanations.
1

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Chapter 1 Introduction
Thank you for choosing TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter.
1.1 Overview of the product
The adapter is designed to provide a high-speed and unrivaled wireless performance for your PC.
With a faster wireless connection, you can get a better Internet experience, such as downloading,
gaming, video streaming and so on.
The TL-WN781ND’s auto-sensing capability allows high packet transfer rate of up to 150Mbps for
maximum throughput. It has good capability on anti-jamming; it can also interoperate with other
wireless (802.11n/g/b) products. The adapter supports WEP, WPA and WPA2 encryption to
prevent outside intrusion and protect your personal information from being exposed.
The Quick Setup Wizard guides you step by step through the installation process; the TP-LINK
Wireless Client Utility helps you create a wireless connection immediately.
With unmatched wireless performance, reception, and security protection, the TL-WN781ND is the
best choice for easily adding or upgrading wireless connectivity.
1.2 Features
¾IEEE 802.11n, IEEE802.11g, IEEE802.11b standards
¾Supports WPA/WPA2 data security, IEEE802.1x authentication, TKIP/AES encryption, WEP
encryption
¾Make use of IEEE 802.11n wireless technology to provide a wireless data rate of up to
150Mbps
¾supports automatically adjust to lower speeds due to distance or other operating limitations
¾Provides PCI-E interface
¾Supports Ad-Hoc and Infrastructure modes
¾Good capability on anti-jamming
¾Supports roaming between access points when configured in Infrastructure mode
¾Easy to configure and provides monitoring information
¾Supports Windows 2000, Windows XP, WindowsVista, Windows7

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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1.3 LED Status
Status Working Status
Off The driver has not been installed.
Flashing Slowly The driver has been installed but there is no data being transmitted
or received.
Flashing Quickly There is data being transmitted or received.

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Chapter 2 Installation Guide
2.1 Hardware Installation
To install the adapter, follow these steps listed below:
1. Turn off your desktop PC and disconnect the power.
2. Remove your PC case and locate an available PCI-E slot on the mianboard. Remove the
metal slot cover on the back of the PC. Check with your computer manufacturer for
instructions if needed.
3. Slide the PCI-E Adapter into the PCI-E slot. Make sure that all of its pins are touching the
slot's contacts. Once the adapter is firmly in place, secure its fastening tab to your PC's
chassis with a mounting screw. Then, close your PC case.
4. Reconnect your PC’s power and turn on your desktop PC.
2.2 Software Installation
2.2.1 Overview
The Adapter’s Setup Wizard will guide you through the Installation procedure for Windows XP.
The Setup Wizard will install the TP-LINK Wireless Client Utility (TWCU) and drivers.
When you install the hardware prior to before installing the software, the system will prompt
“Found New Hardware Wizard”, click Cancel, and run the Setup Wizard program on the CD-ROM.
The Setup steps for Windows 2000 and XP are similar with each other. This user guide takes
Windows XP for example.
2.2.2 Software Installation for Windows XP
1. Insert the Resource CD into your CD-ROM drive, and the Figure 2-1 will appear. To continue,
select the TL-WN781ND.There will be a menu including: Install Driver&Utility, Install QSS
and User Guide.

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Figure 2-1
2. Click Install Driver & Utility to load the following screen.
Figure 2-2
3. Soon, Figure 2-3 will display after a moment. Click Next to continue.

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Figure 2-3
4. After that, you should choose a Setup type. It is recommended that you select Install Client
Utilities and Driver. Select Install Driver Only to install driver only, select Make Driver
Installation Diskette(s) to make the diskette(s) as the installation driver (shown in Figure
2-4). Click Next to continue.
Figure 2-4
5. Click Browse to change the destination location for the software, then click Next in the screen

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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below (shown in Figure 2-5).
Figure 2-5
6. After that, select the program folder, you should create a new folder name or select one from
the Existing Folders list. It is recommended that you keep the default setting. Click Next to
continue the installation.
Figure 2-6
7. Choose configuration tool, if you are not sure, please leave it default. Then click Next to

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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continue.
Figure 2-7
8. Click OK to continue the Installation. Wait a while for the setup as shown in Figure 2-8 .
Figure 2-8
)Note:
For Windows XP, the Setup Wizard will notify you of how to proceed with the installation during

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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these steps (shown in Figure 2-9). Our drivers have been tested thoroughly, and are able to work
with the operating system. Click Continue Anyway to continue the Installation.
Figure 2-9
9. After all the steps above, you will see the screen below, click Finish to close the wizard..
Figure 2-10
2.2.3 Software Installation for Windows Vista
1. Insert the Resource CD into your CD-ROM drive, and the Figure 2-11 will appear. To
continue, select the TL-WN781ND.There will be a menu including: Install Driver&Utility,

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Install QSS and User Guide.
Figure 2-11
2. Click Install Driver&Utility to load the following screen.
Figure 2-12
3. Soon, Figure 2-13 will display after a moment. Click Next to continue.

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Figure 2-13
4. Click Yes to continue.
Figure 2-14
5. The following page will display and please wait a moment.

TL-WN781ND 150Mbps Wireless Lite N PCI Express Adapter
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Figure 2-15
)Note:
For Windows Vista, the Setup Wizard will notify you of how to proceed with the installation during
these steps (shown in Figure 2-16). Our drivers have been tested thoroughly, and are able to work
with the operating system. Click Install this driver software anyway to continue the Installation.
Figure 2-16
6. Click Finish to complete the installation.

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Figure 2-17