Customer Rating : 
List Price : $99.99 Price : $74.99
List Price : $99.99 Price : $74.99
Product Description
A new and improved version of the world's most widely deployed DOCSIS cable modems. For the residential cable subscriber who wants a powerful modem capable of delivering a high-speed data service at blazing fast speeds.
- Up to 160 Mbps downstream, up to 120 Mbps upstream
- Front panel, easy to read operational LEDs to indicate status and simplify troubleshooting
- IPV6 support - latest Internet communication protocol
- Rear panel color coded for ease of installation
Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem Reviews
Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem Reviews
| 237 of 241 people found the following review helpful:  Stay with the SB6120, By Ayame (Denver, CO) - See all my reviews The SB6121 is a little smaller than the SB6120 but runs much warmer than the SB6120. Looks like they tried to cram too much hardware into too small of a space. My SB6121 did not come with the power save button (it's listed as an optional feature), so about the only difference between the two models is the design. Both the SB6120 and the SB6121 use the same firmware: labeled SB612X. So unless you want the different looking LED lights and a smaller and warmer box for a higher price, stay with the SB6120. As far as speeds are concerned: the multiple channel bonding on these DOCSIS 3.0 modems is nice for sustained constant speeds. It also makes it easier for your ISP to enforce the speed cap if they choose to do so (Comcast in my case does). I was getting 20+ Mbps down and 3+ Mbps up on my old Linksys DOCSIS 2.0 modem, however that was the... Read more 57 of 64 people found the following review helpful:  Great Modem works with Comcast, By Falcon (Texas, USA) - See all my reviews Amazon Verified Purchase Bottom line: this is a great modem and it works with Comcast. Comcast just doesn't have its act together. This modem is not only on their approved list, it has a three star rating, which, according to Comcast, is "the highest and most thorough level of testing." When the cable installer got here (I got a new line installed), he said that this modem was NOT on the Comcast list. Since I still had my DSL line working, I showed him that not only did Comcast approve the modem but that Comcast thoroughly tested it. He had to call the "office" to activate the internet service. The "office" didn't want to set up internet service for this modem; the "office" stated that this wasn't an approved modem. Well, he recalled the "office" and got someone else and they set up the service. I've been happy ever since. I'm supposed to get up to 20 Mbps download and 4 Mbps upload. My computers are connected wirelessly. Speednet states that I am getting 20 to 25 Mbps downloads and the upload... Read more 41 of 47 people found the following review helpful:  Disconnects randomly, By Amazon Verified Purchase I bought this because Charter recommended upgrading to a docsis 3.0 modem for better performance and this seemed to be the best (costliest) available. Disappointment! Installation was not smooth. On replacing the modem, Charter couldn't restart the modem remotely, so I had to do it manually. That itself didn't seem right. I saw a slight speed improvement compared to my 5-year old modem, though nothing to justify the 95 bucks I had shell out for this. After a week or so, it just disconnected and I couldn't get it to re-connect. Charter detected some bad signals coming from the modem. I went back to my Ubee old modem which worked fine. After a day later, hoping that it was just a temporary glitch, I installed the SB6121 again and it worked fine for another week after which it again just disconnected. It was as if it needs a day off every few days !! I can't afford to give paid vacations to modems, so I ditched it and returned it to Amazon. |
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