NETGEAR Nighthawk Modem Router Combo (CAX30) DOCSIS 3.1 Cable Modem and WiFi 6 Router - AX2700 2.7 Gbps - Compatible with Xfinity, Spectrum, Cox, and More - Gigabit Wireless Internet

It was easy to set up and works great. I replaced an older model ARRIS with a new one. The new ARRIS didn't work at all, and would not connect to the internet. So, I tried the NETGEAR NIGHTHAWK CAX30. It is fast and connects well to Cox with no issues.

I upgraded my older modem/router combo to meet the current DOCSIS 3.1 industry standard, and the NETGEAR Nighthawk CAX30 has been an excellent replacement. Following the instructions included, the swap was straightforward and fairly easy. While the unit is a bit of an investment, the overall performance boost is undeniable. My download and upload speeds have increased significantly, and I’ve noticed a welcome drop in ping times. Web pages open instantly, and TV apps load much faster without any lag or buffering. Overall, I’m very happy with the stability and speed of this WiFi 6 setup.

Installation of the Netgear Nighthawk Modem/Router CAX30 is simply plug and play. The default configuration will work for most people unless you want to do personal WiFi configuration and/or network configurations. I purchased and installed this for a family member and the default configuration worked just fine. Meaning, we just plugged in the power cord, the coax cable and entered the MAC Address into the Xfinity app and were online within 5 minutes. The router increased WiFi signal within the house and is capable of handling very fast speeds. WiFI 6 also means faster speeds "IF" you have the bandwidth. WiFi QR code, SSID and Password are all on the side of the device.

Awesome modem/router combo. Finally getting the most out of my 1 gig connection. Automatic resolution up across all my streaming services and everything loads so much faster. Also no more modem rental. Wirelessly on my Galaxy s25 Ultra I'm getting over 800 MB a second in a different room through a wall. My PC with the added Nighthawk USB receiver gets similar speeds. And my 2019 LG OLED 4K Smart TV has also seen a significant performance upgrade especially in the quality of the upscaling. Highly recommended you can't go wrong with this device. Picture included was measured with the Okla speed test app on my s25 ultra through one wall. Thoroughly impressed, well worth the money. Oh and it was shipped well, box came undamaged and quickly through UPS.

I purchased the CAX30 in March 2026 as a new product, but I'm now thinking it may have been returned previously since the box was not shrink wrapped. My ISP was able to provision it without issue, and it worked okay for less than 2 months and then failed. I then had my ISP reprovision my old modem/router, which is also a Netgear product I've had for years. It still works fine. I was unable to return the CAX30 to Amazon (it's been longer than 30 days) so I contacted Netgear support. They required that I have my ISP provision it again and run through various troubleshooting steps, which I did. My ISP was unable to get the unit to lock onto the incoming signal. Netgear support insists my ISP must not be setting it up correctly on their end since it now only shows a blinking downstream light. What they will not consider is that my old modem/router provisions just fine and works without issue, and this one was working fine before it failed. The tech asked that I start a 3-way call on my mobile phone with my ISP support agent, but while I was waiting on hold with my ISP (which took over 20 minutes), the Netgear agent hung up, called back and left a voicemail stating he had to hang up since he had not heard from me in 15 minutes. At this point I have no other option but to use my older modem/router and chalk this up to a learning experience (not to purchase another Netgear product). Netgear support refuses to do anything about it despite the evidence of a faulty unit. They want some kind of proof I cannot provide. Their warranty is therefore worthless, and I'm out $240.

I am not a techy person, so I wanted something simple. I must say, I do love my Netgear CAX30 cable modem combo. It was so easy to set up, using the written instructions in the box, that even I was able to do it myself. I'm finally getting the fast internet that I've been paying Xfinity for! My wifi signal is strong and covers my entire 6,000 sq ft lot, including my ranch house with basement, front and back yards. I decided to purchase their Netgear Armor plan because they were offering a year of it for just $50. I'll decide if I want to keep it after a year. Unfortunately, this CAX30 is already a few years old, so I won't be getting updates for more than a couple more years. But I think that will be okay if I keep the Armor security plan. Meanwhile, it works great. However, I will say that their customer service is pretty bad. They do answer their phone fairly quickly, but their English is terrible. You'll spend a lot of time just trying to be understood and understanding them.

I received my modem, and it looks like a used unit — it wasn’t sealed and had a lot of noticeable fingerprints. However, Amazon customer service took care of the replacement, even though the process was a bit slow. As for the Netgear Nighthawk modem‑router combo, it’s impressive. It was easy to set up, the range is excellent, and it delivers the full speed of the internet connection I’m paying for. I love that when I’m downloading something at full speed, my other devices can also stay connected without slowing down. Overall, it’s a solid and reliable upgrade.

Fast & easy Installation when using the Xfinity app. The modem/router comes with a QR code on the side that gets scanned with the Xfinity app and the app walks the user through the entire install. First time something associated with Xfinity actually worked the first time.