Things You'll Need
Instructions
Connect the Xbox 360 Wireless N Networking Adapter to the back of your Xbox 360 console. You can find the networking plug on the back of the system near the top. If you have an Xbox 360 S, you don't need to worry about this step.
Turn on your Xbox 360 console and navigate to the Xbox dashboard. You can get there by removing any game disc or DVD your system is playing.
Scroll to the "My Xbox" menu and select "System Settings."
Choose "Network Settings." Next, hit "Configure Network" to begin setting up your connection.
Select the "Basic Settings" tab and choose "Wireless Mode."
Hit "Scan for Networks" and wait while the console completes your scan. When finished, select the name of your wireless network to connect. If applicable, enter your network password, then select "Done."