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Motorola SURFboard SB5101U DOCSIS 2.0 Cable Modem

Motorola SURFboard SB5101U DOCSIS 2.0 Cable Modem
alaAverage 4.3

108 reviews

Apr, 2014

alaTest has collected and analyzed 108 reviews from magazines and websites.

On average, users rate this product 86/100.

Review analysis

(Based on 108 reviews)

User Reviews  

Showing 1 - 10 of 108 Show Reviews: in English

Consumer review by:

Works as expected


Works, no issues to isp speed 20/2 (when they deliver it)

Screw time warner for making me buy this instead of 'renting' theirs

Consumer review by:

Does not work with Windows 8


Small, inexpensive

After contacting Motorola, I learned that this unit is not compatible with Windows 8 when using the USB connection. The description says it is compatible with Windows, but Windows 8 is the current version and the SB5101U is not compatible ; The earlier...

Consumer review by:

Great purchase for the price


So far, so good. The intallation was very simple and the modem has been working perfectly. It has replaced the provided modem given to me by Comcast (Xfinity) which they were charging me $7.00 each month to use. Their model was old and out-dated, so...


Consumer review by:

It Just Works


TWC was great to work with swapping over to my cable modem. My TWC SURFboard was 10 yrs old when I pulled it out to send back to TWC. Hope to get the same from this one.

No fuss setup. Plugged it in, called my ISP and they completed the change. Saves me from paying them 5.00 /mo for a 10 yr old cable modem


Consumer review by:

good modem


all my new egg products seem to work ok

good price plus faster a bit than charter cable modem same kind too

none so far

Consumer review by:

works great


this modem works better than the modem that i had from the cable company

Consumer review by:

Awesome Router


Would deff. recommend this product.

Works great for gaming, streaming movies, and regular internet surfing. Easy to setup; All I had to do was call ISP and provide MAC address and it worked right away

None yet

Consumer review by:

Good Stuff!!


This equipment is functioning within established parameters and I am satisfied with it's performance.

Consumer review by:

Really Good


Easy setup. Worked immediately. If you can read a few words, you can use it. Just as fast as Time Warner's modem. Well worth double the price


Consumer review by:

Great Start- Died Quickly


It was a great deal had got some good reviews. Our Comcast install-guy even said this was a bread n butter modem that had been around for a while. It setup quickly and ran without error from the get go. It did what a modem should: provide constant,...

After about 9 months, the modem decided it was done. Connection became spotty and we thought it was a problem with our Apple Airport Extreme and we spent a ton of time trying to get them to work together. We called Comcast and when they ran their...

Product Specifications

Riding the Internet wave just gets better and better. Introducing Motorola's new SURFboard SB4100 cable modem. With software upgrades accessible over the network and USB network connectivity, users no longer need to purchase additional software or open their PC to install a standard Ethernet card. The SB4100 offers both Ethernet and USB interface connectivity to help ensure compatibility with almost any PC or Macintosh network-ready computer system. What's more, a front panel stand-by switch has been added for additional end-user security. It disconnects the USB and Ethernet connection to the CPE without disconnecting the cable modem from the RF network, providing security, flexibility and performance. The SB4100 includes all of the enhanced features of previous SURFboard cable modems, including: incredible speed, high-performance processors, advanced RF design, operator-friendly diagnostics, and top-notch field reliability.

Dimensions & Weight



Compatibility:PC / Mac / Unix/Unix / Mac / PC
Packaged Quantity:1
Product Line:Motorola SURFboard


Connectivity Technology:Wired
Enclosure Type:External
Interface Type:Hi-Speed USB / Fast Ethernet/USB
Max Transfer Rate:38Mbps
Protocols & Specifications:DOCSIS 1.1 / DOCSIS 2.0
Type:Cable modem


Type:Network adapter/None