TP-Link TL-WN781ND User Manual

User Guide

150Mbps Wireless N PCI Express Adapter

TL-WN781ND

REV3.2.0 1910012141

Contents

About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Chapter 1. Get to Know About Your Adapter. . . . . . . . . . . . . . . . . . . . . . . 2

1. 1. Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1. 2. LED Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Chapter 2. Connect to a Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Chapter 3. Windows. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. 1. Install Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3. 2. Join a Wireless Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3. 3. Uninstall Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Chapter 4. Linux . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Appendix: Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

About This Guide

This guide is a complement to Quick Installation Guide. The Quick Installation Guide
instructs you on quick installation, and this guide provides the product overview and
detailed instructions for each steps.

When using this guide, please notice that features of the adapter may vary slightly
depending on the model and software version you have. All screenshots, images,
parameters and descriptions documented in this guide are used for demonstration
only.

Conventions

In this guide, the following conventions are used:

Convention

Teal Italic

Teal

Note:

Tips:

Description

Hyperlinks are in teal italic. You can click to redirect to a website or a specific
section.

Contents to be emphasized and texts on the web page are in teal, including the
menus, items, buttons, etc.

Ignoring this type of note might result in a malfunction or damage to the device.

Indicates important information that helps you make better use of your device.

More Info

• The latest driver can be found at Download Center at http://www.tp-link.com/support.

• The Quick Installation Guide (QIG) can be found where you find this guide or inside
the package of the product.

• Specifications can be found on the product page at http://www.tp-link.com.

• Our Technical Support contact information can be found at the Contact Technical

Support page at http://www.tp-link.com/support.

1

Chapter 1

Get to Know About Your Adapter

This chapter introduces what the adapter can do and shows its appearance.

This chapter contains the following sections:

• Product Overview

• LED Status

Chapter 1

Get to Know about Your Adapter

1. 1. Product Overview

The TP-Link Wireless 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.

• Compatible with 802.11b/g/n products

• Supports ad-hoc and infrastructure mode

• Maximum speed of up to 150Mbps for 2.4GHz network

• Supports WEP, WPA/WPA2, WPA-PSK/WPA2-PSK

• Supports Windows and Linux

1. 2. LED Status

You can check the adapter’s working status by following the LED Explanation table.

Status

Off

Flashing Slowly The driver has been installed but no data is being transmitted or received.

Flashing Quickly Data is being transmitted or received.

Tips:

If the LED is off, try these troubleshooting tips:

1. Remove and reinstall the adapter.

2. Refer to Troubleshooting-T2 to check if the adapter is recognized and enabled. Reinstall the adapter software, if

necessary.

The driver has not been installed.
The adapter’s radio has been disabled.

Indication

3

Chapter 2

Connect to a Computer

This chapter introduces how to install the adapter into your computer.