TP-Link TL-WN781ND User manual

TL-WN781ND
150Mbps Wireless N PCI Express Adapter
Rev: 3.0.0
19100113
34

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 © 2015 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.
Canadian Compliance Statement
This device complies with Industry Canada license-exempt RSS standard(s). Operation is
subject to the following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Cet appareil est conforme aux norms CNR exemptes de licence d’Industrie Canada. Le
fonctionnement est soumis aux deux conditions suivantes:
(1) cet appareil ne doit pas provoquer d’interférences et
(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer un
fonctionnement non souhaité de l’appareil.
This device has been designed to operate with the antennas listed below, and having a
maximum gain of 2 dBi. Antennas not included in this list or having a gain greater than 2 dBi are
strictly prohibited for use with this device. The required antenna impedance is 50 ohms.
To reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that permitted
for successful communication.
Industry Canada Statement
Complies with the Canadian ICES-003 Class B specifications.
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
This device complies with RSS 210 of Industry Canada. This Class B device meets all the
requirements of the Canadian interference-causing equipment regulations.
Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
Korea Warning Statements
당해 무선설비는 운용중 전파혼신 가능성이 있음.

NCC Notice & BSMI Notice
注意！
依據 低功率電波輻射性電機管理辦法
第十二條 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻
率、加大功率或變更原設計之特性或功能。
第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通行；經發現有干擾現象時，應立
即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依電信規定作業之無線電信。低功
率射頻電機需忍受合法通信或工業、科學以及醫療用電波輻射性電機設備之干擾。
減少電磁波影響，請妥適使用。
安全諮詢及注意事項
●請使用原裝電源供應器或只能按照本產品注明的電源類型使用本產品。
●清潔本產品之前請先拔掉電源線。請勿使用液體、噴霧清潔劑或濕布進行清潔。
●注意防潮，請勿將水或其他液體潑灑到本產品上。
●插槽與開口供通風使用，以確保本產品的操作可靠並防止過熱，請勿堵塞或覆蓋開口。
●請勿將本產品置放於靠近熱源的地方。除非有正常的通風，否則不可放在密閉位置中。
●請不要私自打開機殼，不要嘗試自行維修本產品，請由授權的專業人士進行此項工作。
Продукт сертифіковано згідно с правилами системи УкрСЕПРО на відповідність вимогам
нормативних документів та вимогам, що передбачені чинними законодавчими актами
України.
Safety Information
When product has power button, the power button is one of the way to shut off the product;
when there is no power button, the only way to completely shut off power is to disconnect the
product or the power adapter from the power source.
Don’t disassemble the product, or make repairs yourself. You run the risk of electric shock
and voiding the limited warranty. If you need service, please contact us.
Avoid water and wet locations.
This product can be used in the following countries:
AT BG BY CA CZ DE DK EE
ES FI FR GB GR HU IE IT
LT LV MT NL NO PL PT RO
RU SE SK TR UA US

TP-LINK TECHNOLOGIES CO., LTD
TP-LINK TECHNOLOGIES CO., LTD.
Building 24 (floors 1, 3, 4, 5), and 28 (floors 1-4) Central Science and Technology Park,
Shennan Rd, Nanshan, Shenzhen, China
DECLARATION OF CONFORMITY
For the following equipment:
Product Description: 150Mbps Wireless 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, Directives 2006/95/EC, Directives 1999/519/EC, Directives 2011/65/EU
The above product is in conformity with the following standards or other normative documents:
EN 300 328 V1.8.1
EN 301 489-1 V1.9.2 & EN 301 489-17 V2.2.1
EN 60950-1: 2006 + A11: 2009 + A1: 2010 + A12: 2011
EN 62311: 2008
The product carries the CE Mark:
Person responsible for making this declaration:
Yang Hongliang
Product Manager of International Business
Date of issue: 2015

CONTENTS
Chapter 1Product Overview ................................................................................. 1
1.1 Introduction ................................................................................................................1
1.2 Features.....................................................................................................................1
1.3 LED status .................................................................................................................1
Chapter 2 Connect to a Computer ........................................................................ 2
Chapter 3 Install driver and utility......................................................................... 3
Chapter 4 Join a Wireless Network....................................................................... 7
4.1 TP-LINK Utility ...........................................................................................................7
4.2 WPS (Wi-Fi Protected Setup)....................................................................................8
4.3 Windows Wireless Utility ......................................................................................... 11
Chapter 5 Management........................................................................................ 13
5.1 Status.......................................................................................................................13
5.2 Profile....................................................................................................................... 13
5.3 Advanced................................................................................................................. 16
5.4 SoftAP (For Windows 7 only) ..................................................................................16
5.5 About .......................................................................................................................17
Chapter 6 Uninstall driver and utility.................................................................. 18
Appendix A: Specifications................................................................................... 19
Appendix B: Glossary............................................................................................ 20

TL-WN781ND
150Mbps Wireless N PCI Express Adapter User Guide
1
Chapter 1 Product Overview
1.1 Introduction
The TP-LINK TL-WN781ND 150Mbps Wireless N PCI Express Adapter connects your desktop
computer to a Wi-Fi network for lag-free video streaming, online gaming, secure Internet surfing
and Internet calls.
1.2 Features
Complies with IEEE 802.11n, IEEE 802.11g, IEEE 802.11b, IEEE 802.11e, IEEE 802.11i
standards
Supports WEP, WPA/WPA2, WPA/WPA2-PSK data security, IEEE802.1x authentication,
TKIP/AES encryption
Supports high rate of up to 150Mbps for maximum throughput, supports automatically
adjust to lower speeds due to distance or other operating limitations
Provides 32-bit PCI Express interface
Supports Ad Hoc and Infrastructure modes
Good capability on anti-jamming
Supports roaming between access points when configured under Infrastructure mode
Easy to configure and provides monitoring information
Supports Windows 8.1/8/7/Vista/XP
1.3 LED status
Status Working Status
Off
The driver has not been installed;
The adapter's radio has been disabled.
Flashing Slowly The driver has been installed but no data is being transmitted or received.
Flashing Quickly
Data is being transmitted or received.

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150Mbps Wireless N PCI Express Adapter User Guide
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Chapter 2 Connect to a Computer
Before using your adapter, connect it to your computer by following these steps:
PCI-E Slot
1588
!
1. Turn off your computer, unplug the power cord and other connected peripheral devices to
your computer.
2. Remove the case panel. Locate an available PCI-E slot and remove its slot cover.
3. Carefully insert the adapter into the PCI-E slot and secure it with the retaining screw.
4. Replace the case panel.
5. Reconnect the power cord and turn on your computer.
Note:
In Windows XP/Vista, a Found New Hardware Wizard window will appear when the
adapter is detected. Please click Cancel.

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150Mbps Wireless N PCI Express Adapter User Guide
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Chapter 3 Install driver and utility
The Setup Wizard will guide you through the installation procedures. We use the procedures in
Windows 7 as an example - the procedures may vary slightly for other versions of Windows.
1. Insert the resource CD into your CD drive and click the Run Autorun.exe from the pop-up
AutoPlay window.Select TL-WN781ND and click Install Driver and Utility to begin.
Note:
The CD is included in the package. If your CD does not work or your computer doesn't
support the CD, you can also download the driver and utility from the TP-LINK website
(www.tp-link.com).
In some operating systems, the CD screen will pop up automatically. Otherwise, run the CD
manually.
2. The InstallShield Wizard window displays. Click Next to continue.

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150Mbps Wireless N PCI Express Adapter User Guide
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3. Choose a setup type. It is recommended to select Install TP-LINK Wireless
Configuration Utility and Driver. Click Next.
4. If you want to change install location, click Change to specify the location for the software
installation. Or you can leave it default. Click Next.

TL-WN781ND
150Mbps Wireless N PCI Express Adapter User Guide
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5. Click Install. After a few minutes, the installation completes. Click Finish.

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150Mbps Wireless N PCI Express Adapter User Guide
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6. TP-LINK utility pops up after installation. Its icon appears on the desktop as and in
the Windows system tray as . You can use the TP-LINK utility to join a Wi-Fi network
with your adapter. For more guidance, please refer to Join a Wireless Network.

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150Mbps Wireless N PCI Express Adapter User Guide
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Chapter 4 Join a Wireless Network
There are three options of using the adapter to join a Wi-Fi network.
Option 1: TP-LINK Utility
TP-LINK Utility lets you easily connect the adapter to a Wi-Fi network and manage the adapter.
Option 2: WPS (Wi-Fi Protected Setup)
WPS (Wi-Fi Protected Setup) is a network security standard for easily adding computers and
other devices to a home network. Use this method if your wireless router or access point
supports WPS.
Option 3: Windows Wireless Utility
You can use the Windows WLAN Autoconfig service (for Windows 8.1/8/7/Vista) and the
Wireless Zero Configuration service (for Windows XP) to join a Wi-Fi network.
4.1 TP-LINK Utility
1. Double-click (TP-LINK Utility icon). The Network screen displays.
2. Select the network you want to join from the list on this screen and click Connect. If you
want the adapter to automatically connect to the network next time, select the Connect
automatically checkbox. Enter your Wi-Fi password when prompted.

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150Mbps Wireless N PCI Express Adapter User Guide
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Note:
If your Wi-Fi network is not displayed in the list, you can try to join it by WPS or by adding a
profile in the Profile screen.
4.2 WPS (Wi-Fi Protected Setup)
WPS can be activated via PBC (Push Button Configuration) and PIN code. Please refer to PBC
or PIN below.
PBC
1. Press the WPS/QSS button on your router or AP.

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150Mbps Wireless N PCI Express Adapter User Guide
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2. Open TP-LINK Utility and click WPS tab. Select Push the button on my access point or
wireless router and click Connect.
3. The following screen indicates a successful connection by WPS. Click OK.
PIN
Option 1
1. Open TP-LINK Utility and click WPS tab. Select Enter the PIN of my access point or
wireless router. Enter the PIN of your router or AP. Click Connect.

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150Mbps Wireless N PCI Express Adapter User Guide
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Note:
The default PIN of your router or AP is printed on the product label of your router or AP. If you
generated a new PIN for your router, please enter the new one.
2. The following screen indicates a successful connection by WPS. Click OK.
Option 2
Note: This method is only available in Windows XP and Windows Vista.
1. Open TP-LINK Utility and click WPS tab. Select Enter the PIN of this device into my
access point or wireless router. The screen displays a PIN of the adapter, which is
generated randomly. Click Connect.
2. Log in to the Web Management page of your router or AP. Go to the WPS page, enter the
PIN of the adapter in the corresponding field and click Connect.

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150Mbps Wireless N PCI Express Adapter User Guide
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3. The following screen indicates a successful connection by WPS. Click OK.
4.3 Windows Wireless Utility
Follow the instructions in the appropriate section below to use your computer system’s built-in
wireless utility: Windows 8.1/8/7, Windows XP, Windows Vista.
Windows 8.1/8/7
1. Click or (Network icon) on the system tray. Select the network you want to join,
and click Connect. Enter your Wi-Fi password when prompted.
Note:
If you do not want to enter the Wi-Fi password, you can also join a wireless network either by
pushing the WPS or QSS button on your router or AP, or entering the PIN of your router when
the screen prompts you to do so, and click Next.
2. When Connected displays next to the network name (SSID) on the screen, it indicates a
successful network connection.
Windows XP
1. Right-click (TP-LINK Utility icon) on the system tray. (If you do not see the icon, click
the hidden icons arrow on the system tray.) Select Switch to Windows wireless
configuration tool.
Or you can open the TP-LINK Utility, select Advanced tab, then select Use Windows
wireless configuration tool.

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150Mbps Wireless N PCI Express Adapter User Guide
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2. Right-click (Windows XP Wireless Zero Configuration Utility icon) on the system tray,
and select View Available Wireless Networks.
3. Select the network you want to join, and click Connect. Enter your Wi-Fi password when
prompted.
Windows Vista
1. Click (Network icon) on the system tray, and select Connect to a network.
2. Select the network you want to join, and click Connect. Enter your Wi-Fi password when
prompted.

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150Mbps Wireless N PCI Express Adapter User Guide
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Chapter 5 Management
TP-LINK Utility provides you with an easy way to manage your adapter. It includes the following
sections:
Status - View the information of the current Wi-Fi network connection and of the adapter.
Profile - Save or manage various Wi-Fi network connection settings.
Advanced - Turn on or off the SoftAP mode and power saving mode, switch between TP-LINK
Utility and Windows Wireless Utility (for Windows XP only).
SoftAP - Configure the settings of the network shared by your adapter, and view the IP address
of your adapter when it works on SoftAP mode.
About – View your adapter’s Utility version and its Driver version.
Double-click (TP-LINK Utility icon) and click the Status, Profile or Advanced tab to
manage the corresponding section of your adapter.
5.1 Status
You can view the IP address and MAC address of the adapter, the signal strength of the Wi-Fi
network, and other information of the network status as shown in the following figure.
5.2 Profile
The Profile screen lets you save and manage different Wi-Fi network connection settings as
profiles so that you can quickly and simply connect to your network. Moreover, you can join a
hidden Wi-Fi network that does not broadcast its SSID by adding a profile, provided that you
know its wireless settings, such as SSID, security type, and encryption type. For more details,
please refer to the instructions below: To add a new profile, To join a Wi-Fi network, To manage
an existing profile.