Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem - 575319-019-00

Customer Reviews   Write a Review

5 out of 5
Total Reviews
Overall Satisfaction
Ease of Use

cheaper than renting and better performance! 5++++

-Anonymous quote

DOCSIS 3.0 gets me faster speeds than I pay for with Comcast. I pay for 25/5 and get 36/6. The modem has yet to hang up on me. It's been running for 3 solid months of daily, heavy usage, and hasn't needed a reset yet. In combination with a DD-WRT flashed Linksys E-2000, I have been up and running for 3 months with no interruptions to my internet service, despite 3MBps downloads, 400 user connected torrents, and heavy online gaming. One of the best purchases I've ever made. Highly recommended.

-James Headfield quote

We love it!

on 2/13/2012

This modem is almost twice as fast as the leased unit it replaced. Read More

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Great Modem!

on 2/20/2012

cheaper than renting and better performance! 5++++ Read More

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Product Overview

Your customers want high-bandwidth data and multimedia services. Our easy-to-use SB6121 SURFboard® eXtreme Cable Modem helps you deliver. Harnessing the power of DOCSIS® 3.0, the SB6121 enables channel bonding of up to four downstream channels and four upstream channels—so you can offer your customers advanced multimedia services with data rates of more than 100 Mbps in each direction.


Manufacturer Motorola
Mfg Part# 575319-019-00
SKU 221961792
UPC 612572186237
UPC 14 00612572186237
Sales Rank 69
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.
GigE (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
Product Attributes
Environmental Certification Energy Star
Product Line SURFboard

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Seller Infomation Price & Shipping  
State Street Deals $44.95 + free shipping
Condition: Refurbished
In Stock
100% Tested cable modem. Comes with power supply and ethernet cable, FAST SHIPPING !
Usually ships in 1 to 2 business days
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Tirgo $49.00 + free shipping
Condition: Refurbished
In Stock
Seller Refurbished Item, Tested to work. Includes Modem, Cat5, Power Supply. Ships out same day, 3 day delivery!
Usually ships in 1 to 2 business days
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210.technologies $52.99 + free shipping
Condition: Refurbished
In Stock
SB6121 Cable modem in great condition.includes modem, power adapter, Ethernet cable, and quick start guide. Ships fast and free with tracking.
Usually ships in 1 to 2 business days
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FoxxSales $79.97 + free shipping
Condition: Brand New
In Stock
Usually ships in 1 to 2 business days
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$79.97 + free shipping
$99.99 You save $20.02 (20%)
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Condition: Brand New
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