NETGEAR Nighthawk DOCSIS 3.1 Mid/high-Split Cable Modem (CM3000) – Approved for Today’s Fastest Speeds - Works with All Providers Incl. Xfinity, Spectrum, Cox - for Plans up to 2.5Gbps

I had bought a new laptop and was having issues that I thought would mean returning it. It would show that I had great connection to the router but no wifi. I constantly had to refresh to make it connect. Thought it was the laptop, but then it started happening on other devices. My old modem was 5 years old. I started thinking maybe that was the problem, so I decided to upgrade that before blaming my devices. This modem was easy to activate through the internet provider's app. Lo and behold - it solved all the connection issues. Devices that connect to my wifi are buzzing along now. So, it was just a case of my old modem not being up to the task anymore. The old modem was also a Netgear. I was pleased with the service I got from it, so when it was time to upgrade I went with Netgear again. Very pleased with the results.

I recently upgraded to the NETGEAR Nighthawk CM3000 DOCSIS 3.1 cable modem, and it has been an exceptional performer for my high-speed internet needs. Here's my experience: Pros: Supports Top-Tier Speeds: This modem is approved for cable plans up to 2.5Gbps, making it perfect for today’s ultra-fast internet and future-proofing for years to come. My speeds are consistently reliable, with no dips or interruptions, even during peak hours. Broad Compatibility: It works seamlessly with all major cable providers, including Xfinity, Spectrum, and Cox. Activation with Xfinity was a breeze, taking only a few minutes to get up and running. DOCSIS 3.1 Technology: The mid/high-split support ensures better upstream and downstream capabilities, making it ideal for heavy internet users like gamers, streamers, and remote workers. Compact Design: The sleek, vertical design saves space and blends well with my other networking equipment. Cons: No Built-In Wi-Fi: This modem doesn’t include Wi-Fi capabilities, so you’ll need a separate router for wireless connections. For me, this wasn’t an issue since I paired it with some other routers Price: It’s a bit pricey compared to some other modems, but the performance and future-proofing make it worth the investment.

The modem replaced a SB8200 on Spectrum and the firmware V6.01.03 is correctly working on Spectrum. The modem works great and is fast. It is VERY tall/large compared to other non-WiFi standalone modems. The admin page to see signal levels and logs is very annoying to get to work on a PC browser and it is highly recommended to check this page on a mobile device browser. The info provided in the cable connection diagnostic admin page is ample and should satisfy most users for signal diagnostics. The advanced administration tab Event Log provides identical information the Arris models show and is the same a Spectrum tech would have access to with their Scope software for their provided modems. I'm happy with the performance of this modem overall, but as stated already a few nitpicks is the overall size of the modem and the wonky desktop browser access of the admin gui page... really strange.

Ditched my Xfinity model for this. Solved so many of my rage inducing issues I had with Xfinity. Definitely recommend. I have had it running non-stop for months now with no problems.

I purchased the CM3000 in December 2024 because I had had issues with my previous Modem and saw this was a fast and reliable product. The Modem worked Ok for 8 months, I had to reboot every 2 weeks to keep it running smoothly. In August 2025 it stopped working completely. Product support at Amazon and Netgear was non existant Very disappointed indeed. Seems to be a race to the bottom for Modem manufacturers.

Title: Performed flawlessly Description: Easy to install & performed flawlessly as soon as I turned it on. Connects to the highest speed offered by Xfinity.

I’ve used netgear equipment for years with their routers and other devices. Everything just works and when it doesn’t, it’s easy to find support and get it working the way I want it to. After upgrading my cable internet speed, I needed an upgraded cable modem and this worked flawlessly with spectrum. They were able to add it quickly to their network and it gave me above 1 gb/s speeds right away. Paired with my nighthawk RS600 and my house runs with crazy speeds! Even in rooms across the house, WiFi speeds exceed 900 mb/s. Fantastic!

Great buy - easy to set up and runs just like described.