The MG7310 is an 8x4 343 Mbps DOCSIS 3.0 cable modem with a built-in N300 wireless router certified by a number of leading cable service providers including Comcast XFINITY, X1, Charter Spectrum, Time Warner Cable, Cox, and BrightHouse. Owning the MG7310 eliminates modem rental charges that are often $156 per year. The built-in N300 wireless router provides the networking support needed for wireless n/g/b devices including smartphones, computers, tablets, and HDTVs. Four 10/100/1000 Gigabit Ethernet ports provide wired connections to computers, HDTVs, game stations, and other Ethernet-capable devices. This item works perfectly, and is in like new condition with no cosmetic blemishes; also comes with original box and instructions. I originally paid over $100 for this, so this is a great deal just in time for the holidays.