https://www.xfinity.com/support/internet/list-of-approved-cable-modems/ https://www.xfinity.com/support/internet/list-of-approved-ca... To configure it, you ju

https://www.xfinity.com/support/internet/list-of-approved-cable-modems/ https://www.xfinity.com/support/internet/list-of-approved-ca... To configure it, you just plug it in. I think you may have to call them after you plugged it in and then activate it on their end.