ARRIS(S34) - Cable Modem - Fast DOCSIS 3.1 Multi-Gigabit Cable Modem, for Comcast Xfinity, Cox, Spectrum & More, 2.5 Gbps Max Internet Speeds, 2 Year Warranty - (No Built-in WiFi)

Been a really good modem. No issues, setup was easy and has been working great.

Andddd, this is perfect. The perfect home modem for those of us who don’t yet have fiber and need to rely on coax cable.Compared to my previous high-end modems, this one is smaller, quieter, and faster. I consistently max out my ISPs advertised speed (approx 1.1Gbps down and 20Mbps up).It hasn’t gone down a single time and has been rock solid for me. Highly recommend.

Got this one "used mint" for a great deal. Absolutely pristine, and worked perfectly. I get up to 400 megabit with xfinity, but I could get the faster service up to 1200 megabit in the future. But ezfiber trucks are trolling the neighborhood, and fiber service will come online soon, with up to 8 gigabits, and no modem required. Finally, I can say goodbye to xfinity, because they suck. Luckily, there is a brisk market for a used modem, so buy with confidence.

Modem needs to be 2x bigger, have a 1” fan sucking air in and a 1.25” set of fans blowing air out. Modem also requires firmware that updates itself, shuts down the modem 15 minutes and restarts daily. With these automated functions, mine appears to work reliably. However in factory configuration, 15-20 devices will overheat the modem fast and produce connection problems.

The ARRIS Surfboard S34 DOCSIS 3.1 Cable Modem is a solid choice for anyone looking to maximize their internet performance. I upgraded to this modem to handle faster speeds from my ISP, and it delivers consistently strong and stable connections, even during peak usage times.Setup was straightforward. I connected it to my ISP (Comcast Xfinity in my case), followed the activation steps, and was online in minutes. The modem supports multi-gig speeds up to 2.5 Gbps, which means it’s ready for future internet upgrades without needing another replacement anytime soon.What stands out is its reliability. Streaming, gaming, and video calls run smoothly without buffering or lag. The compact design also fits neatly on my desk without taking up too much space.One small consideration is that this modem doesn’t include a built-in router, so you’ll need a separate one for Wi-Fi. However, that’s standard for high-performance modems like this.And here’s a quick tech joke: Why did the modem break up with the router? Because they just couldn’t connect anymore!Overall, the ARRIS Surfboard S34 is a top-notch modem for anyone who needs high speeds, stable performance, and a device that’s ready for the next generation of internet plans. It’s a smart investment for fast and reliable connectivity.

I have Xfinity's 1200 Mbps plan. After activating this router I ran a speed test. The speed test's results showed a speed of over 1500 Mbps! I have no complaints.

The modem works well…after you get it set up. I was on the phone to customer support twice. The first person/level was not able to resolve the issue, but the second person was. It is not plug and play out of the box.

Nice upgrade from my previous 5-year-old modem. Works well. I am now receiving all the bandwidth I pay for from Comcast without paying their monthly rental charge.Super easy to provision using the Xfinity mobile app.