How do I pair my Xfinity XR2 remote to my cable box?

Pair to a TV Box To pair the XR2 Remote with a Non-X1 TV Box: While the TV is on, press and hold the Setup button on the remote for 3 seconds until the All Power button changes from red to green. Enter the first 5-digit code listed for the TV manufacturer. Note: The All Power button should blink twice.