This is an Arris TG852G EMTA modem and wireless router for Comcast XFINITY customers with internet and telephone service. This is a docsis 3.0 modem so it will support the faster "Blast" speeds of 50Mbps and above, plus is has a built-in Wi-Fi router. It has dual phone ports so you can run two phone lines through it. If you don't have telephone service through Comcast, you can get an internet only modem for $65 instead, or a modem/router combo for $85. Give me a call or text if you're interested or have any questions. Stop renting, you can save up to $10 per month by owning your modem instead.Here are all the modems I carry if your needs are different:$40: Doscis 2.0 modem for Performance (25Mbps and below)$65: Docsis 3.0 modem for Blast (50Mbps and above)$75: Docsis 3.0 telephony modem for phone and internet service$85: Docsis 3.0 modem with wi-fi router built in$95: Docsis 3.0 telephony modem with wi-fi router built iThanks,Ty