perfect condition . only had for about a year. I am selling because I moved from Chicago to St. Louis and had to get my Internet providers router specs from Amazon: Description Product Description A new and improved version of the world's most widely deployed DOCSIS cable modems. For the residential cable subscriber who wants a powerful modem capable of delivering a high-speed data service at blazing fast speeds.10 / 100 / 1000 Base-T Ethernet Port (RJ-45) and 1-Year Limited Warranty. Additional information: Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm Compatible with ALL Major CABLE providers like Comcast, Cox, Charter, Time Warner, Mediacom, Bright House From the Manufacturer Building upon the success of the SB6120, Motorola's SURFboard SB6121 delivers your complete personal media experience, at lightning-fast broadband speed. It harnesses the power of DOCSIS 3.0 technology to bond up to four downstream channels and four upstream channels--providing you advanced multimedia services with data rates of more than 100 Mbps in each direction. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications far more realistic, faster, and efficient than ever before. See . Key Features Easy to Set Up and Use Plug and play installation Front panel LEDs indicate status and simplify troubleshooting Multi-language user guides Supports standard internet software User-friendly online diagnostics Efficient Stylish and space-saving enclosure Offers innovative, high-bandwidth data and multimedia services to customers Backward-compatible to DOCSIS/EuroDOCSIS 1.x and 2.0 Advanced Services Ready DOCSIS 3.0-certified (EuroDOCSIS 3.0-based) Channel bonding of up to 4 downstream and 4 upstream channels 1 GHz capable tuners Supports IPv4 and IPv6 to expand network addressing capabilities Versatile and Convenient Compatible with Windows, Macintosh, and UNIX...