ARRIS SURFboard SB6121 Cable Modem Black Ethernet Coaxial with Power Adapter

ARRIS Surfboard SB6121 DOCSIS 3.0 Cable Modem, Black with AC Adapter

Arris SURFboard SB6121 DOCSIS 3.0 Cable Modem

ARRIS Surfboard Model SB6121 DOCSIS 3.0 Cable Modem with AC Adapter

Arris SURFboard SB6121 (575186-019-00) Cable Modem Slightly Used In Box

Arris SURFboard SB6121 DOCSIS 3.0 Cable Modem - Black W/AC Adapter