Customer Ratings & Reviews

Hey put together a gaming computer and wanted it real fast also didn’t want to take away speeds from my family as they used the internet as well this thing is a beast 16x faster then the one given from spectrum a must have

Excellent piece of tech gear for the price. Replaced outdated modem router combo from internet provider. Great for streaming live sporting events very little to no buffering it is Night and day over old equipment

The Surfboard line of modems has served me well for many years. Recently upgraded to this one from the previous model which I ran pretty much continuously for 5 years before it started to act up.

I really can't provide a review based on it's performance because I never opened the box. I am sure this modem is excellent, but as a Spectrum Internet customer, they gave me one at no charge. I am finding the Spectrum modem to work extremely well so I returned the one I purchased from Best Buy.

Finally enjoying my internet after having it for over a year with constant prob! I have an Apple airporter extreme and express that I use and had nothing but issues with Comcast modem!! Picked this up on recommendation from Bestbuy employee and it works like a charm!! No more rent charge for modem that doesn't work! Thanks Geeksquad.....

Good overall product but not the best solution for more complex or multiple Wi-Fi networks. For the money, though, if an easy plug n play solution is what you need…… grab one

Comcast said, they no longer support Surfboard 5121 this replacement is on the list of supported devices so I ordered this one. The tech description matches the more expensive cable modems so cost and specs drove my purchase.

The Surfboard modem has gone above and beyond what the old rental modem/router combo I had. It has been reliable and stable as long as I have had it thus far.

My internet connection is so quick at home with this modem. Streaming is quick as well! A great buy!

Phenomenal modem, 10 out of 10 would recommend. Super quick to set up

I had a ARRIS modem before and this one is just a update version of the old modem. It is stable and good to use. It doesn't come with cable line. But my network carrier provided that.

Ours died so we bought a new one, bigger and 4 times what we had. So far its doing great !

Bought this so I could stop renting from the cable company. Has worked perfectly since day one!!

I bought the modem and the night hawk x10 together I did a speed test both before and after. I gained on average with this combo of 10mb down load and 4mb upload. Much faster modem than what Spectrum’s gives you.

I bought this for my Xfinity/Comcast broadband service as a replacement to the leased modem. It works just as well as the one I had been leasing and has been working fine so far. I have had this for about 2 months so far. Saves me money on my internet bill as I don't need to lease their huge modem this one is less than half the size.

This modem is easy to set up. With Comcast there is a website that pops up automatically to activate it with your service, so I didn't even need to call in. Buy this and save a little by no longer renting from the cable company.

Wasn’t hard to set up. Just had to call the internet company to program the modem.

I bought this because I need the most of my internet speed and I read the reviews so I decided to try it. It's pretty awesome! My internet speed picked up dramatically so if you're in need to make the most of your internet, try this out.

Finally getting good internet ...upgraded from a SB6141 and what a difference... getting consistent speeds all day long... buffering not coming up anymore on internet and tv that used to happen before

Good price, seems to work well, the isp (xfinity) is terrible with support