my printer, a HP 6500a, wont connect to wifi.

@preinsko​ Xfinity does not manage your printer.

You can connect to your specific HP 4630 printer directly, without Xfinity, directly to the printer, with a feature called "Wireless direct".  See page 87: http://h10032.www1.hp.com/ctg/Manual/c03909822.pdf  Install the latest software and drivers first.

Here is also a bit more on wireless standards:  https://www.lifewire.com/wireless-standards-802-11a-802-11b-g-n-and-802-11ac-816553

Your printer uses 802.11 b/g/n for a WiFi Standard.  Xfinity XB8 is using 802.11 ac/ax by default.  They are not speaking the same standard.  You might be able to change that by changing what Xfinity calls "WiFi modes":   https://www.xfinity.com/support/articles/change-wifi-mode-admin-tool-xfinity-xfi .  Your WiFi devices and gateway have to speak the same standard to communicate with each other.  You'll have to do that with the phone app now as they crippled the gateway local administration page. 

Some folks are reporting that being able to change "WiFi modes" is now crippled too with Xfinity gear.  I don't know if it is or not on your specific gateway and firmware.  In the future, it's always good to look at the WiFi standard the device uses before you buy it/deploy it.  Also, if they can't publish a manual for it, or you have to control it with a phone app -- the least secure device you own -- you don't want it.

I'm never keen on changing factory defaults of any hardware. My old modem was an ARRIS TG1682 I still have the user guide, so I checked, and it provided 802.11a/b/g/n/ac connectivity. This modem worked perfectly with HP Smart and all my devices including the printer purchased in 2014. 

So, it looks like I need a newer printer; but it seems all the HP printers use Wireless 802.11a/b/g/n,  

I can't find any that support 802.11 ac/ax exclusively. 

However, the ones that do list connectivity 802.11a/b/g/n say they are HP Smart app capable. Would this be satisfactory, or do I have to find a printer that actually states it supports 802.11 ac/ax? Do you supply a list of printers that are compatible with XB8? 

Also is there some manual or user guide for the XFinity phone app, it seems rather limited in scope; but I've seen references to configuring the modem so there must be something I'm missing with the menu choices. 

Thanks in advance

@preinsko​ Well that's the question right?

Xfinity makes some claims about being able to "Change WiFi Modes".  Even enable 802.11 b (old 2.4G), however in practice, you find out either the app can't do it, the firmware can't do it, or your configuration stored off-site won't download correctly.  What's their solution?  Exchange it for another persons problem -- nobody on earth could afford to swap out hardware for a database issue, so they're recycled between problems.

Do they publish a manual for it?  Or their firmware loads that break stuff with a change log?  Nope.

Advice?  Keep the printer.  Ditch the Xfinity hardware.  Make sure you can log in and administer the gateway/router/modem locally, and not with a phone app. 

Ditching the Xfinity hardware is not an option.

A new printer that has up to date technology is the acceptable solution for me.

You didn't answer my question are printers that use wireless 802.11a/b/g/n compatible with the XB8 gateway? I went online with HP and found a few suitable printers. I then chatted with a HP technician and the printer that I decided to buy is compatible with XB8.  

You can close out this ticket. 

Thanks for your help I learned a lot and appreciate it. 

This was not an acceptable solution.. also, you didnt open the ticket.. so why are you saying to close it. 

also your printer the HP 4630 has wifi N.. there should be ZERO issues with you connecting it to the XB8..