More advanced version of the SB6120 DOCSIS 3.0 Cable Modem

• 64MB RAM and 16MB Flash vs. SB6120 (32MB RAM and 8MB flash)
• Has two optional VOIP (Voice over IP) telephone ports
• DOCSIS 3.0 Certified, Packetcable 1.5 Certified, Packetcable 2.0 ready
• Up to 160 Mbps speeds!