SURFboard SB5101 USB Cable Modem liIncorporates the latest DOCSIS 2.0 Advanced Time Division Multiple Access (A-TDMA) and Synchronous Code Division Multiple Access (S-CDMA) technologies to provide up to 3x greater upstream capacity than DOCSIS 1.0/1.1 systemsli Interoperable and backward compatible with DOCSIS 1.0 and 1.1 for a fast and timely transition li30Mbps downstream data transfer rate and 30Mbps upstream data transfer rateliInterfaces/ports: 1 x RJ-45 10/100Base-TX Network LAN