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nkUsing the TP-LINK TL-WN722N on CentOS 6.2 x86_64
Revised Feb 11, 2012 by j.w.curtis and r.a.parks.

Introduction
The following document was created for the purpose of supporting a TP-LINKTL-WN722N USB Wi-Fi adapter (802.11b/g/n) on a clean, vanilla installation of CentOS 6.2 x86_64. The following is provided “as is” without warranty of any kind, either expressed or implied.Prerequisites
• You've successfully installed CentOS 6.2 x86_64 using either the 'Minimal Desktop' or 'Desktop' configuration, or a custom configuration that includes the Minimal Desktop functionality. (CentOSis available for download via http://www.centos.org/. Installing it is outside the scope of this document.) You have yet to apply any CentOS updates after installation. This document assumes a new,non-patched installation, and does not take into account the possibility of kernel and driver updates until after the initial Wi-Fi configuration is complete. You know the 'root' password created wheninstalling your CentOS. A TP-LINK TL-WN722N adapter is physically plugged in to a USB port on the system. A functional, wired Ethernet adapter is also connected to the system, and you're able to reachdestinations on the Internet. (Note that Ethernet is not configured to 'Connect automatically' following a new CentOS 6.2 installation, so you may have to activate it before getting started.)



•• •

Getting Started
1. Log in to the system as ‘root’ if you haven't already. 2. Launch Applications > System Tools > Terminal. 3. Type lsusb and press Enter. Look for a line similar to thefollowing that mentions the Atheros AR9271 chipset. This confirms that the system knows that your TP-LINK TL-WN722N is physically connected. If you don’t see the following, it’s unlikely that thisprocedure is going to work upon completion.
Bus 002 Device 002: ID 0cf3:9271 Atheros Communications, Inc. AR9271 802.11n 

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4. Next we need to install the Kernel Development package. Type...
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