ARRIS SURFboard SB6121 DOCSIS 3.0 Cable Modem (Refurbished)

$29.99 Excl. tax
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Product description

  • Brand:Motorola
  • Article number:MO-SB6121R
  • Availability: In stock (33)

Building upon the success of the SB6120, Motorola's SURFboard SB6121 delivers your complete personal media experience, at lightning-fast broadband speed. It harnesses the power of DOCSIS 3.0 technology to bond up to four downstream channels and four upstream channels--providing you advanced multimedia services with data rates of more than 100 Mbps in each direction. That makes gaming, shopping, downloading, working, high-quality voice and video conferencing, and peer-to-peer networking applications far more realistic, faster, and efficient than ever before.

SB6121 front

Key Features

Easy to Set Up and Use

Plug and play installation

Front panel LEDs indicate status and simplify troubleshooting

Multi-language user guides

Supports standard internet software

User-friendly online diagnostics


Stylish and space-saving enclosure

Offers innovative, high-bandwidth data and multimedia services to customers

Backward-compatible to DOCSIS/EuroDOCSIS 1.x and 2.0

Advanced Services Ready

DOCSIS 3.0-certified (EuroDOCSIS 3.0-based)

Channel bonding of up to 4 downstream and 4 upstream channels

1 GHz capable tuners

Supports IPv4 and IPv6 to expand network addressing capabilities

Versatile and Convenient

Compatible with Windows, Macintosh, and UNIX computers.

Gigabit Ethernet (RJ-45) data port enable flexible, high-speed connectivity with Auto Negotiate and Auto MDIX

Reliable and Secure

Enhanced security: supports Advanced Encryption Services (AES) traffic encryption

Remotely configurable and monitorable using SNMP and TFTP

As part of Motorola's DOCSIS 3.0 Ultra-Broadband family of products, the SB6121 includes an enhanced tuner that supports up to a 1 GHz downstream input, which allows operators to increase the frequency spectrum for deployment of new high-value services--such as bandwidth on-demand, commercial services, interactive gaming, and IPTV. The SB6121 features a 10/100/1000Base-T Ethernet (RJ-45) port, as well as intuitive, easy-to-read front-panel operational status LEDs.

What's in the Box

Motorola SURFboard SB6121, Ethernet cable, installation sheet

System Requirements

The SB6121 is compatible with the following operating systems:

Windows 7

Windows Vista, Service Pack 1 or later

Windows XP, Service Pack 2 or later

Mac 10.4 or later (Ethernet connection only)

UNIX (Ethernet connection only)

Linux (Ethernet connection only)

What Is DOCSIS 3.0?

With the DOCSIS 3.0 specification, cable Internet providers can take advantage of the extra capacity provided by channel-bonding technology in order to offer ultra-fast broadband services. Channel bonding allows parallel data pipes to act as a single broadband conduit. With each channel capable of providing around 40 Mbps of data, the Motorola SURFboard SB6121's four downstream channels can provide a theoretical maximum of 160 Mbps of throughput.

Currently, cable providers max out at around 50 Mbps of downstream data throughput, but DOCSIS 3.0 will enable cable Internet providers to continue to improve the speed of their networks.

This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty

Requires CABLE Internet Service, if not sure your provider is CABLE call them to confirm

Compatible with ALL Major CABLE providers like Comcast/Xfinity, Cox, Charter, Time Warner, Mediacom, Bright House

Internet download speeds up to 172 Mbps and upload speeds up to 131 Mbps based on your Cable provider service

Good for streaming Video and gaming on multiple devices at a time


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