Used but great condition. Still works! Cable MOdem Modem ARRIS/ Motorola Sb6121 Quality warranty: All pass the Original Factory QC with 6 months Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm Broadband Cable access, Ethernet Port. 10/100/1000Mbps Ethernet port to connect with router or computer Supports IPv4 and IPv6 to expand network addressing capabilities Compatible with Windows, Macintosh, and UNIX computers. DOCSIS 3.0-certified (EuroDOCSIS 3.0-based Accesories included Good for streaming Video and gaming on multiple devices at a time Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm10/100/1000Mbps Ethernet port to connect with router or computerSupports IPv4 and IPv6 networking, as well as Windows, Mac, and Linux computersGood for streaming Video and gaming on multiple devices at a timeDOCSIS 3.0 certified, capable of up to 172 Mbps and upload speeds up to 131 Mbps based on Cable Internet Service Provider Serious only! Cash only! pickup in Pasadena (preferably by PCC)