Instructions
Wired
Connect the controller's cable to the in-line release cord. This cord prevents you from accidentally pulling the Xbox 360 along with your controller during game play.
Insert the in-line release cord's USB plug into the USB port on the front of the console.
Turn on the console to activate the controller automatically.
Wireless
Insert batteries in your wireless controller, if necessary.
Hold down the "Guide" button on the controller.
Push the Xbox 360's "Connect" button, located on the front of the console.
Push the controller's "Connect" button to sync it with the Xbox 360.