Model MB7220 is an 8x4 343 Mbps DOCSIS 3.0 cable modem certified by a number of leading cable service providers including Comcast XFINITY, Time Warner Cable, Cox, and BrightHouse. Owning this modem eliminates modem rental charges that are often $100 or more per year. With 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 means that up to 8 cable data channels carry data from the Internet, eight times faster than DOCSIS 2.0; and up to 4 channels carry data to the Internet. A Full-Band Capture digital tuner helps assure consistently fast speeds from your service provider. A 10/100/1000 Gigabit Ethernet (GigE) port allows connection of a computer, router, HDTV, game station, or other Ethernet-capable device. Setup is fast and easy with a few quick steps set out in a Quick Start guide. Experienced USA-based customer support specialists are ready and willing to help if you need them. This product is backed by a two-year warranty and features lightning and power surge circuits to provide additional protection of your investment. DOCSIS 3.0, 2.0, and 1.1 support and CableLabs certification ensure compatibility with cable services nationwide. The MB7220 offers the value, performance, and attention to quality that continue to make Motorola the leading brand of cable modems. Please note that the MB7220 plugs easily into computers, HDTVs, and other Ethernet-capable devices including any router of your choice, but the MB7220 does not have a built-in router. Motorola Model MG7310, for instance, has both a cable modem and a built-in router. Cable Modem Features: Supports IPv4 and IPv6 for powerful, flexible network addressing.