If I was you I'd buy your own personal modem that way they don't get a residual monthly fee on you. Then I'd buy a separate wireless router. Go buy a modem that's compatible with Xfinity Broadband configuration. There's many out there! All you have to do is give them the MAC address. Then I would buy a separate wireless router that can handle your speed. Two separate devices. Do not have one device that does both. It'll cost you a couple bucks prior but I'll save you money on your bill and Xfinity getting richer off us with their high prices. I have the same configuration I'm talking about and I don't have any problems and my internet wirelessly is super fast even faster than the Xfinity modem. Your call.
For xfinity yes. You can go on line and check out which one you prefer.
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