ARRIS (SB6183) Cable Modem - Fast DOCSIS 3.0 16x4 Gigabit Cable Modem, For Comcast Xfinity, Cox, Spectrum and more, 1 Gbps Port, 400 Mbps Max Internet Speed, 2 Year Warranty

["Harness the power of DOCSIS 3.0 technology to bond up to 16 downstream channels and 4 upstream channels. The ARRIS SURFboard SB6183 enhances your personal media experience, at fast broadband speed.","Get speeds up to 686 Mbps download and 131 Mbps upload (speeds based on your Cable Internet service provider). Compatible with most U.S. cable providers.","Features DOCSIS 3.0 technology to bond up to 16 downstream channels and 4 upstream channels.","Supports IPv4 and IPv6 Internet standard.","Requires Cable Internet Service. If you are unsure of your service, please contact your CABLE provider to confirm."]