Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem: * Channel bonding of up to 4 downstream channels and 4 upstream channels increasing data rates of well over 100Mbps in each direction * Motorola Cable Modem Supports IPv4 and IPv6 * Supports AES traffic encryption * 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