Hi - We just got Xfinity Internet. 300mbps. The supplied modem - ARRIS TG3482G. Model 1G34B2G Docsis 3.0
We took the Xfinity modem for 1 month to see how it works. I want to now buy my own modem and save $14 a month. Which one does Xfinity suggest to buy? And can I step up to docsis 3.1? Or do I need to talk to technical department?
FWIW, the Comcast supplied device that you mentioned is a combination modem / router gateway device. The devices that others have mentioned are straight cable modems with which you'll need to purchase and use a separate router for your home network / WiFi. Be advised that there are also combo gateway devices available at retail.