Customer Ratings & Reviews
- Model:
- SB6121
- |
- SKU:
- 2836657
Customer reviews
Rating 4.6 out of 5 stars with 2915 reviews
(2,915 customer reviews)Rating by feature
- Performance4.6
Rating 4.6 out of 5 stars
- Ease of Use4.7
Rating 4.7 out of 5 stars
Customers are saying
Customers admire the SURFboard DOCSIS 3.0 High-Speed Cable Modem for its ease of use, performance, and affordability. Many appreciate the straightforward setup and compatibility with their internet providers, along with its compact size. While some experienced issues with the modem's WiFi capabilities and occasional overheating, the positive feedback on performance and ease of use outweighs these concerns for most users.
This summary was generated by AI based on customer reviews.
- Pros mentioned:Ease of use, Performance
Rated 5 out of 5 stars
Easy to install, and very reliable!
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Easy to install, and very reliable! Check out specs before buying the next higher model. This one has plenty of horsepower for most residential internet connections.
I would recommend this to a friend - Pros mentioned:Ease of use, Speed
Rated 5 out of 5 stars
double speed and easy install
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.it was easy to install, call comcast and was up and running in about 5 mins, after install my download speed went from 24 mbps to 50+ mbps using the Ethernet cable.
I would recommend this to a friend Rated 5 out of 5 stars
The Official Modem From Comcast
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.This modem meet all the requirements for the new 3.0 requirement from Comcast. Amongst all other modem, this one is though the low end but the least expensive. Great choice and offer from BestBuy.
I would recommend this to a friendRated 4 out of 5 stars
works as described
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.connection is slower than expected but I am willing to assume this is the result of Comcast. Comcast tech installed for me and did all of the activation. The orange blinking status light is confusing, it makes you think theres a problem when really its just an activity light. For the price I can't complain.
I would recommend this to a friendRated 4 out of 5 stars
Great Product
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I got tired of paying rental fees every month to crimecast, so I decided to get my own modem, glad I did. Actually noticed a better connection more stable connection on this when I ran test on it.
I would recommend this to a friendRated 5 out of 5 stars
Works as a modem should
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I bought this modem because our old one got too old to work with Comcast. So far it has worked flawlessly. It works exactly how a modem should work and hasn't required a restart after two months.
I would recommend this to a friendRated 5 out of 5 stars
Works great
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I got this to replace the all in one from xfinity that I was using. I paired this with an ASUS wireless unit and it has been excellent. Speeds are great, I am getting 106 mod hard wired in. Great choice if you don't want to pay rent for the xfinity unit.
I would recommend this to a friendRated 4 out of 5 stars
ok for the price but
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.had numerous problems with it's compatibility with Xfinity even though the box said it was compatible. After several attempts to get it to function, I was only getting minimal download speeds. Called Xfinity, they stated the product was at it end of cycle as far as compatibility with their internet.
No, I would not recommend this to a friend- Pros mentioned:Setup, Speed
Rated 4 out of 5 stars
works with high speed internet
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I needed to upgrade my internet and my current modem could not handle the new internet speeds. I bought this modem and it was easy to set up. I am NOT disappointed with the amount of speed they can handle
I would recommend this to a friend - Pros mentioned:Speed
Rated 5 out of 5 stars
should have done this years ago
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I'd been thinking for a long time to buy my own modem and stop paying rent to Comcast for one. Their rep said they go bad often and Comcast will replace it, so I kept renting (but it never needed replacement). Then Comcast raised the rent price which prompted me to act. The salesgirl at Best Buy directed me to the one I needed. It was simple to exchange, just had to call Comcast to get them to register it. It's worked perfectly ever since, and I think it's faster than the one I had. I'm so glad I finally did this; it'll only take a few more months to break even, then I'm saving money.
I would recommend this to a friend Rated 4 out of 5 stars
A funtional DOCSIS 3.0 modem
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.This is a good modem that BBuy online had for dirt cheap. Really can't complain to get a DC3.0 modem for $45.00. Replaced my Comcast loaner unit and saved $10.00 a month. This modem only supports 4 downsync channels so if you have a plan pushing over 100mbit you will need something a little better.
I would recommend this to a friend- Pros mentioned:Ease of use, Setup
Rated 5 out of 5 stars
great modem
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Very easy to use. Just plug in and hook up to your router and will boot up instantly. Works great with comcast!
I would recommend this to a friend Rated 4 out of 5 stars
Good size for a small living room
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I bought this tv on a budget, and it is working out very well. My couch is only about 5 feet from my entertainment stand, and I can see the picture clearly. there are four different aspect ratios to choose from, but so far, wide gives the best viewing quality for movies. Great size for an apartment.
I would recommend this to a friend- Pros mentioned:Setup
Rated 5 out of 5 stars
Gets the job done
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.This thing is pretty self explanatory. It sets up quick and it works with Cox Internet. You will have to call them and let them know that you are activating a new modem or use the activation site through their website if you can get it to work. Other than that, it's a modem. It works. It doesn't make noise. I wish that the lights on the from were subtle instead of lit up icons but that's pretty minor.
I would recommend this to a friend Rated 4 out of 5 stars
Good modem - is recommendable
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.This modem worked more or less as advertised. I do find that my internet service drops at times. My provider is Comcast. I had a Comcast modem which was more reliable but bought this one to avoid the monthly rental fee. I suspect that any failure in service is Comcast's fault as opposed to this modem.
I would recommend this to a friendRated 5 out of 5 stars
I love the new Apple TV
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.I've had an Apple TV for at least 5 years, and I love it. The new one is even better! Best Buy made it a simple on-line purchase that I could pick up in the store...I just wish there had been a store closer to me, but it was worth the trip!!
I would recommend this to a friendRated 5 out of 5 stars
Great Cable modem for comcast service
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Saving good money when you using your own modem (Currently $8 per month) ... Easy installation: take out of box, connect power and service cable, call to Service Provider ... that is all .... Great speed and very reliable ... Highly recommend ..
I would recommend this to a friendRated 4 out of 5 stars
Worked out of box
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Worked great out of box with Comcast cable. Bought same version from Amazon and had to return it due to replicated MAC Id. The comcast rep mentioned he had seen it before with Amazon and recommended buying from local electronics store.
I would recommend this to a friend- Pros mentioned:Ease of use, Price
Rated 4 out of 5 stars
Great modem...
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Easy to set-up and good price. Also, fast connection. As a streamer, this modem has been tremendously fantastic. I would recommend to a friend any day.
I would recommend this to a friend Rated 5 out of 5 stars
Good for the price
||Posted .This reviewer received promo considerations or sweepstakes entry for writing a review.Works great. Only complaint is that a blinking orange light is the color they picked for a healthy wireless signal. Seems more alarming than reassuring.
I would recommend this to a friend

