Customer Ratings & Reviews

This is a very tiny and sleek cable modem compared to other brands and styles. I was surprised at how small it was. The performance seems to be on par for download speeds, however, even though Xfinity lists the S33 as a preferred modem, the one I got from BestBuy was a S33v2 which is not shown as recommended on Xfinity's list of modems. In addition, this modem is not on the list for Xfinity's next gen speed tier, so the uploads speeds are not anywhere near what they should be. For me, it was around 5Mbps when it should have been 300Mbps.

Easy to set up. I am getting more bandwidth out of our cable system than previous modem. It is nice to have room to go up to 2GB in the future.

I don’t have a gigabit connection, but decided on this device based on its reviews. I use Cat 8 cabling and a combination of hard wired and wireless connections in my network. I bought this to replace another, older Arris modem that started hiccuping after 4 years. This modem initialized faster by about 15 seconds and allowed me to squeeze almost 600 Mbps from my cable connection when previously I was topping out a little over 400. A possible explanation is that it has better processing. By all means get this if you have gigabit internet - I don’t in my area. I am happy I bought this product.

activating this modem on xfinity was very simple. Download speeds are better than xfinity xFi. When I had 1200/40 service with xfinity, this was the modem to have. But, after upgrading to 2000/200 service is when the problems started. Download speeds are still better than xFi, but the upload speed would not upgrade and remained stuck at 40 gbps. I spent so much time with xfinity support and they could not get it to increase. I read the forums, many people are having the same problem. In the end, xfinity has not approved this device for faster uploads than 40 gbps. I do not know if this is a conspiracy or if it is a legitimate hardware limitation. But, for the top xfinity data plan, you'll need something else (like G54)

This arris modem works for our xfinity service. I like how compact arris has gotten with their house modems. It does the job well, highly recommend!

Easy to install, can use mobile app to register purchase. Was connect to ISP (Wowway) and be up and running with no issues. Interesting that there is only one LED compared to the older connection LEDs.

This was really easy to setup and get connected to my internet service. So far I’ve had zero issues with it and have been able to run multiple devices with no loss of speed.

Works great with Comcast! Fast speeds easy setup easy troubleshooting

I ordered it and was shipped next day which was fast ! Set up was extremely easy. Called RCN and gave them MAC address and my internet is connected! The speed has been a little higher than the old one.

I was rocking a SB6190 for a few years now... I know the chip on it is problematic but I never had too much issues with it... I game a lot and latency was never a issue. But besides the point. I was informed by a friend that works for Spectrum that our little area was getting upgraded from the base speeds only to the 400 down package. So I decided to upgrade the modem too in the process. Was pleasantly surprised to see that Spectrum is utilizing DOCSIS 3.1 in our area even though we do not have the 1gigabit plan available. They have 1 - 3.1 channel and 31 - 3.0 channels available. And we do get well over the advertised speed of 400. Its been running for a month now... No restarts required, quiet, and no noticeable issues. Solid modem... Just wished they didn't make it this weird shape. More and more people are mounting their modems in network cabinets, network panels and what not... having something that is not easily mountable is a miss from ARRIS for me. I will eventually probably just open this thing up and create a casing for it that is more my thing.

Replacement for an Xfinity rental. It has worked flawlessly for over a month. Fairly easy setup, had to have Xfinity authorize it. The speeds are just as good as with the Xfinity rented modem. Great purchase.

I purchased this modem to handle increased internet speeds from my ISP. I'm very satisfied with the modem but I do wish that I had purchased a model that was wi-fi capable, as well. The reason being that, when I had problems with my router, I was unable to bypass it, with a separate modem wi-fi connection. That's not a criticism of ARRI S33 but a caveat, for those considering a purchase.

Solid device. No issues with speed or connectivity. Just a note, if you plan on using both ports concurrently, you’ll need to have 2 IP addresses assigned from your ISP. 2.5Gbps port is every bit as advertised.

It can handle GB speeds and never loses connection. Does not take up a lot of space. Very happy with this modem.

I bought it because the old modem stopped working and Comcast was phasing it out. Easy to set up. Does run warm, so make sure you have it someplace with some good air circulation.

This modem is great and so easy to set up. I'm so glad I chose this one.

Easy Set Up Out Of The Box Not Sure About All The Specifications But Probably Faster Then My Previous Motorola SB6121

It was simple to install and setup. Works as advertised.

I, didn't have a lot of information about this router so I went blind with this model and to be honest arris know what they are doing they're been in the business for a long time. this little fella is awesome I had it for a few weeks and I been great not issues whatsoever easy to set up overall excellent!!

Works wonderful. Especially while streaming and gaming. Hands down one the best options if you want relaible speeds without out lagging.