How to sync or add a new XBOX controller to the new XBOX
To add a new controller, or sync, to your new XBOX, First turn on the XBOX and then turn on the controller. On the top of the controller is a very small button with a symbol that looks like three waves, press and hold this button for a few seconds until the lights begin a revolving pattern. Then press the sync button on the front of the XBOX lower right side, it has the same three waves symbol on the button. The lights will change pattern indicating it is syncing, which in my case took only a few seconds.