Xfinity doesn't provide a free modem, so I had to buy one in addition to a Wi-Fi router. I opted for the Hitron CODA Modem-- a DOCSIS 3.1 model that's one of the cheapest Xfinity-compatible models ...
go on Amazon and buy a cable modem of your own; save $10 per month, forever. But Comcast has just released its new xFi Advanced Gateway, a high-speed modem-router combo that can handle gigabit ...