Power Adapter External DC power adapter
Carrier For all major cable ISPs
Channels 8 Downstream, 4 Upstream
Item Weight 0.7 lb
Maximum LAN Data Rate 1000 Mbps
Brand Motorola
Number of LAN Ports 1
Product Line SURFboard
DOCSIS Standard DOCSIS 3.0
Form Factor Desktop
Model SB6121
Ports Ethernet (RJ-45), Coaxial F-Connector
Color Black
Flash Memory 16 MB NOR Flash
Humidity 10-90% non-condensing
MPN SB6121
Operating Temperature 32-104°F (0-40°C)
Supported Protocols SNMP v1, v2c, v3
Storage Temperature -4-158°F (-20-70°C)
LED Indicators Power, Receive, Send, Online, Link
Item Width 5.5 in
Max. Downstream Speed 343 Mbps
RAM 128 MB DDR3
Security BPI+, AES
Connectivity Wired-Ethernet (RJ-45)
Processor Broadcom BCM3380
Certifications FCC, UL, CableLabs
Item Length 2.2 in
Power Consumption 5W (typical)
Item Height 5.6 in
Type Cable Modem
Compatible Internet Service Providers Xfinity, Spectrum, Cox, Mediacom, Cable One & more
Features IPv4, IPv6

Check the listing for details. ARRIS SURFboard SB6183 DOCSIS 3.0 Cable Modem 16x4 686 Mbps - black. Color: Black, Condition: Used. Listed at 21.77 USD. Unlock high-speed internet with the Motorola Arris SURFboard SB6121 DOCSIS 3.0 Cable Modem. The compact design of the SB6121 makes it an unobtrusive addition to any setup.

$15.24
$21.77