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College Station, TX

Compatible List of Cable Modems for Suddenlink

I've had Suddenlink Internet and Cable for over a decade now. I currently use the Motorola SB5105 SURFboard cable modem. I do not need a modem with wireless capability because I have my own router that does that for me.

As you know Suddenlink is upgrading to DOCSIS 3.0 and with that increased download rates. In order to take advantage of that I need a newer modem that is compatible with DOCSIS 3.0.

I've searched the suddenlink site this forum and asked uncle Google but no luck.

I am looking for an up to date 2011 list of Compatible Cable Modems that will work with Suddenlink's network.

Anyone have a link to that site or PDF?


» ··· ist.aspx
Are you now or have you ever been a member of the Islamic religion?

Sherwood, MI
I see they finally got that working again.


College Station, TX

1 edit
reply to Cabal
Thanks! Before I order one I have just one question.

Has Suddenlink been experiencing issues with the Motorola SB6120 SURFboard Cable Modem?

Another Item Link: » ··· 01UI2FPE

Because that specifically is the one I want to get.

BTW I live in College Station, Texas if that matters.

Motorola SURFboard SB6121 Cable Modem (SB6121) is also available now if that would be better.


College Station, TX
reply to kilroy0097
I live in College Station as well, and have had the Motorola SB6120 for almost 2 years now (on the 20mb/2mb plan). The modem has worked fairly well, no real problems to speak of.
I would go with the SB6120, and also get a high end router if I were you, as opposed to a combo modem & built-in wifi. Usually find that a router will work better, if you get a quality one.
The only real "issue" that I have with Suddenlink is that since this is not their standard model modem, they do not update the firmware for it (as far as I know). And this modem can only get firmware updates that are pushed via the ISP. - Kinda stupid if you as me (but this is the case with most Motorola modems).
Remember that you'll need at least the 15mb + package to take advantage of the docsis 3.0 speeds that this modem offers (at least I think docsis 3.0 starts with their 15mb package).


College Station, TX
Thanks for the reply. I currently have the High Speed Internet 15 plan which I suppose is 15mb down 1mb up. It's their old fastest speed plan which I was grandfathered into when they moved up to the 20 plan. And with the Motorola SB5101 I'm good to go on their DOCSIS 2.0 requirement that took effect last year.

Source: » ··· ems.aspx

As of September 1, 2010, Suddenlink will only support new-customer modems that are DOCSIS 2.0 or higher.

* New and current Internet customers who subscribte to 20 Mbps or higher speeds must have a DOCSIS 3.0 modem
* Current Internet customers should not be affected by this change
* Since mid-2006 all modems purchased or leased from Suddenlink are DOCSIS 2.0 or higher

I also already have a pretty decent Linksys router as my gateway so I'm good there. After doing some research on SB6120 vs SB6121 I'll be going with the SB6121 just because it's newer hardware and the eventual successor.

I had sent Suddenlink a request a few days ago and received a rather standard generalized email with no real details. I had asked them about Modem Compatibilities they didn't even bother giving me the link to the list of DOCSIS 2.0 and higher compatible modems or give me the link to the "search modems" function which I found on their website by accident and random searches (see above link). Essentially they didn't offer me anything I couldn't have gotten by calling them in the first place. Makes me wonder why I even bothered sending a request through their online form.

This is their reply to my request:

From: Suddenlink Communications
To: k********
Sent: Monday, September 19, 2011 7:30 PM
Subject: RE: Contact Us Email (#2800-252494712-9155)

Dear K**********,

Thank you for your email. I appreciate the opportunity to assist you today.

K****, You can get any Cable Modem that is Docsis 2.0 or 3.0, will be compatible with our system. We have modem that can be purchased or rented. and also we have WiFi Modems that can only be rented. If interested, please contact us via phone or chat at the information below.

If you have any further questions, you may contact us via our online chat at » ··· /#tabs-3 or by phone at 1-888-822-5151. The operating hours for our online live chat are 7 days a week, 7am-12am Central Standard Time, and our phone support is available 24/7.

Thank you,
I-Care Specialist


Lastly, after surfing on it for a while and then using google with site restriction in attempt to find some information, I have to say that is perhaps one of the worst websites I have ever seen. To find even the most simple piece of information is like hunting for the lost city of El Dorado. They need a serious website overhaul.

Look at Comcast's site. So nice and neat and I found their compatible modem list in literally minutes. »

Any rate thanks for all the help. Motorola SB6121 SURFboard Cable Modem will be what I will be ordering.