Comcast charges $15 monthly to rent its modem-and-router device, the xFi Gateway (and $20 monthly for faster plans). If you have your own compatible modem and router, you can use those and skip ...

Find your Xfinity password through the X1 TV Box If you use a compatible Xfinity X1 TV Box ... consider performing a factory reset of your Xfinity modem. You can then re-setup the entire device ...

In fact, its compatibility is somewhat limited to ... The Xfinity Flex streaming box is an option for customers with only Xfinity internet, and it connects to your TV via HDMI.