Model MB7220 is an 8x4 343 Mbps DOCSIS 3.0 cable modem certified by numerous leading cable service providers including Comcast XFINITY and Time Warner Cable. This modem eliminates modem rental charges that are often $100 or more per year. Easy installation, high-speed, broad compatibility, and superb customer support, Model MB7220 is the perfect choice for almost any cable modem user. 8 X 4 performance means eight downstream channels deliver speeds up to 343 Mbps, eight times faster than DOCSIS 2.0. Four upstream channels provide speeds up to 123 Mbps. A Full-Band Capture digital tuner helps assure consistently fast speeds from your service provider.