SURFboard® Cable Modem

The SB6121 delivers your complete personal media experience, at incredible broadband speeds. 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 download speeds up to 172 Mbps in each direction. That makes surfing, shopping, and downloading far more realistic, faster, and efficient than ever before.

  • + 4X Faster than DOCSIS 2.0
  • + Download speeds up to 172 Mbps
  • + DOCSIS 3.0 Cable Modem
  • + 4 download & 4 upload channels
  • + Supports IPv4 and IPv6 – the latest Internet standard
  • + Compatible with major U.S. Cable Providers