had a 6 year old docsis 2.0 surfboard, just upgrade to this today, about a half hour ago. super easy to install, obviously just direct swap out. xfinity app was super easy to use, 6-7 minutes it was up. love the ARRIS builds. I didn't realize this was the 1 gig modem though, my mistake. need to return for the 3 gig model but either way this is a 100% recommend.

Comcast upgraded so I had to also, we’ll that’s what they said. This product works fine.

I had a problem with my Internet signal fixed by Cox. Modem unnecessary.

I think there may have been a mistake on this order. The modem is not compatible with an Xfinity Comcast system. However, the package says it is compatible.