1.       turn off your Xbox360 and disconnect anything connected to the I/O port on the back of your Xbox360.

2.       Connect the wireless Xbox360 adapter to the I/O port on the back of your Xbox360 by pressing the tads on the adapter into the two slots on the back of the console.

3.       Connect the wireless adapter cable to your Xbox360 I/O port.

4.       Flip up the network adapter’s antenna.

5.       Turn on your Xbox360, If you are using an unencrypted wireless network, your Xbox connects to it antomatically, and you can skip the rest of the steps, If you are using an encrypted wireless network(which you should be!),click the System tab, and then click Network Settings.