HP printer 8600 and XB8-T Xfinity Gateway

I would like to mention that https://forums.xfinity.com/conversations/your-home-network/new-xb8-router-and-hp-wifi-printer/62e052bf6a3f856065f6e33d?commentId=63729a94b768a260608cf713 helped me with the problem of connecting the subjct matter.

Add a 2.4 band and change the emcription to WPA2 in the XB8-T router.  Finally working after hours of researching!  Hopefully this post will help the next User with this problem