Stop getting scammed by rental fees from ISPs like Spectrum and Comcast and own your own modem!! Saves u tons of money in the long run. ARRIS/Motorola SB6121 SURFboard DOCSIS 3.1 Cable Modem: Channel bonding of up to 4 downstream channels and 4 upstream channels increasing data rates of well over 400 Mbps in each direction SURFboard modem supports IPv4 and IPv6 Supports AES traffic encryption Motorola modem features enhanced network management Ability to provision and manage IP multicast GigE (RJ-45) data port with auto negotiate and Auto MDIX User-friendly online diagnostics Power saving energy conservation switch Internal low pass filter to eliminate MoCA signal overload SURFboard modem can be installed and activated without disrupting service Weight - 1.2 lbs