Motorola SB6120 Cable Modem – Don’t Buy Before You Read This Review


I just got a great online deal on a Motorola SB6120 SURFboard DOCSIS 3.0 eXtreme Broadband Cable Modem, and would like to share my personal experience with this product by reviewing it here.


I was pleasingly surprised at the amazing performance boost in my COX Cable Internet speeds. The SB6120 was reasonably priced, easy to install, and it’s raw speed will blow you away. I would highly recommend the Motorola Surfboard if you’re in the market for a cable modem.

What’s in the Box:

The first thing I noticed when the SB6120 arrived was that it was noticeably smaller and lighter then my old Linksys device. The modem came packaged with a small AC power adapter and Ethernet network patch cable. Also included was a quick cable setup diagram and a documentation CD containing an Adobe PDF SB6120 users manual.

SB6120 Installation:

Installation of my new Motorola Surfboard modem was very easy. I just disconnected & removed my old Linksys modem, connected the coaxial and network cables, and plugged it in. After installing the SB6120, I had to call my cable provider (Cox Cable in my case) and give them the serial number and MAC address of the new modem. These are printed on the modem and on the box. After following the Cox technicians simple instructions on rebooting my new modem, then restarting my home network router, I was online and happily surfing the Internet.

Motorola Surfboard Performance:

I couldn’t wait to jump over to to see what this baby could do. All I can say is WOW, I was getting over 30 Mbps download and almost 6 Mbps upload speed. These are very impressive numbers by any account, and a dramatic increase in speed over my old Linksys modems throughput.

Key Features:

  • Super Fast – No Lag in Online Gaming
  • DOCSIS 3.0 backwards compatible to DOCSIS 2.0
  • Up to 4x faster than DOCSIS 2.0 modems
  • Gigabit Ethernet Port -10/100/1000 Base-T
  • Very Easy to Install and Use
  • No Additional Software Required


The Motorola SB6120 SURFboard DOCSIS 3.0 eXtreme Broadband Cable Modem is not the cheapest modem you can buy, but in my honest opinion it’s one of the best values. The SB6120’s speed, performance, features, and excellent customer reviews made it a no brainer for me, and I am very satisfied with the one that I purchased.


Source by Dan Karas

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