This article explains how to set up an Xbox Series X or S using the Xbox mobile app or the console itself.
How to set up your NEW Xbox Series S or Series X console!
When setting up an Xbox Series X or S, there are some system updates to consider downloading. You'll also want to make sure you have the Xbox app installed on your phone, or that you have your sign in information handy if you already have an Xbox account.
Connect the supplied power cord to your console and then plug the power cord into a wall outlet.
Connect the HDMI cable that came with your Xbox Series X or S to the console.