High-speed Internet and Wireless N at your fingertips. The SURFboard SBG6580 Wi-Fi Cable Modem is 3 products in one device: DOCSIS 3.0 Cable Modem, Dual-Band 802.11n Wi-Fi Access Point and 4-port Gigabit Ethernet Router. Capable of download speeds up to 343 Mbps and Wi-Fi speeds up to 300 Mbps per band, the SBG6580 is an affordable, complete solution for your home network. And with built-in security you never have to worry. So what are you waiting for? SURFboard. The Market Leader in modems.