The TP-LINK TC-7620 is a high-speed cable modem with DOCSIS 3.0 standard, offering up to 680 Mbps downstream data rate and 1000 Mbps LAN data rate. It is a sleek black unit with wireless ports, making it easy to connect to your network.This cable modem and router combo from TP-Link is compatible with Comcast and has one LAN port for connecting a single device. It also features Ethernet connectivity and is an ideal unit for home networking and connectivity needs. The TP-LINK TC-7620 is a top-quality cable modem and router that delivers reliable and fast internet speeds without compromising on style.