NETGEAR Nighthawk Cable Modem CM1200 - Compatible with All Cable Providers| For Cable Plans Up to 2 Gigabits | 4 x 1G Ethernet Ports | DOCSIS 3.1, Black (Renewed)

This renewed modem was such a bargain compared to new. I wanted to upgrade my internet to Gig internet and needed to upgrade my modem. Bought this renewed version (it looks like new) and I am glad I did. While I was unable to self-activate on the Spectrum activation site due to an unknown error on their end, I called and they activated it within a minute or two. I don't have any problems with it and am now enjoying 900Mbps+ speeds. Yaay.

This is the kind of modem cable providers should be providing! Had nothing but problems with Optimum's Altice modem/router combo. Since I have my own Wifi router I never needed to use the built in wifi that the Altice modem came with. No issues at all with this one out of the box. Simply just plugged it in (Cable, Ethernet, Power) and then called Optimum to get the modem provisioned. 100% recommend this for anyone looking to switch off the ISP provided modem and get their own they can keep using.

I am writing this review to help anyone that has experienced slowness on Xfinity after a few months. I previously had a modem that was giving me issues. I was paying for 800 megs, but wasn't only getting 5-40 depending on the day. I tried different methods of troubleshooting, and determined it was from the modem. I then purchased this modem renewed which worked flawlessly for a few months. It was also time for an upgrade, so I figured why not. After a few months, I started experiencing the same issues as my last modem... Slow speeds with nothing really helping. The speeds would be normal right after a reboot, but then dip low after a few minutes. I noticed this time that it happened after an outage, and thinking back that's when my previous one started becoming slow. I thought what the heck this must be an Xfinity issue, so I called Xfinity to remove this CM1200 from my account. I then re-added and... BAM. Everything back to normal. It has been working fine since. I'm hoping this helps someone who is experiencing the same issues with Xfinity. TLDR If you're having issues with performance (speed) and have Xfinity, try removing the device and re-activating the modem again.

I am... not an Xfinity fan but they have a monopoly in my area but that's life. Recently my old modem was made no longer supported from Xfinity's side so I needed a new one. Of course they decided to hit me with the "if you use our Xfinity modem then you'll never have this problem" well no thank you - you save more money before even a year if you just get your own modem/router scenario. Anyways get this one or the Arris s33 as they are comparable - if you're going for a lower cost solution with a wifi setup. Note: this does not have wifi it's just the modem. This one is slightly cheaper compared to the s33 but the s33 is more "future proof". I say this in quotes because while the s33 has a 2.5gbps ethernet port while this one only has a 1gbps, that doesn't mean it won't be made incompatible again in the future because of other updates on Xfinity side (both of these are around 2019/2020). Also 2.5gbps is a lot and you likely aren't hitting that (and by the time we do I'm almost certain these modems will again be out of date). You can set it up on the Xfinity app as well, if you have trouble I recommend you use the chat and just immediately ask for agent and either chat or have them call you (just keep spamming agent if you can and then select internet if needed)

Bought this modem refurbished and labeled as in excellent condition. The modem had a 90 day warranty also. It worked good with no problems for just under 3 months. I started having internet connection problems. The ISP came and checked all the cables, The internet was back. Then it would connect intermittently. I called the ISP again. This time they did some tests which were OK, except for the speed test through the modem. The speed test through the cable was fine, but the modem wouldn't connect. After determining the modem went bad, I called the Netgear rep to check on the warranty. By this time I was 12 days past my 3 months because of the 2 cable provider visits. I explained all this to the Netgear rep. He told me there was nothing they could do since it was past the 90 days. He wanted to sell me a plan which would cost me $169.99 and we could try to get it working that way. The plan also covered other electronics in the home. They had already gotten $99 from me on a faulty modem. I had to buy a new modem. this one from another company and it's been working flawlessly, so far. Be careful if your considering buying refurbished electronics from Amazon.

Xfinity sent me an email saying they upgraded my internet speed (from 200 mbps to 500+ mbps) at no charge but my current docsis 3.0 modem couldn’t handle that speed. I have a netgear router that can handle that speed and a netgear extender for the back of the house that can also handle that speed. This refurbished router is more than 50% cheaper than new and so I decided to give it a try. Once received, 1) I disconnected old modem (coax cable, power plug, Ethernet cable to router) and connected this one and the same manner. 2) on Xfinity app, I chose activate Xfinity gateway or modem, then clicked own modem. 3) I put the MAC address at the bottom of the modem. 4) took about 5 minutes for Xfinity to activate it. I then restarted the modem and router. Presto. Tested the speed and download is consistently over 560 mbps. Great deal and easy to install and activate!

I love the nighthawk brand and me moving from a Motorola arris surfboard 3.0 to this was because it was the 3.1 and I just upgraded my nighthawk router to the mesh WiFi by nighthawk. Now my internet plan is 1gb and after research the arris modem only handles speeds up to 1gb but this modem handles up to 10gb speeds so I’m basically future proofing my home if my provider ever gets fiber optic or increase the plan past 1gb, this offers no WiFi but that is what I wanted since I have a WiFi mesh system to run the cable from the modem. There are newer models than this that offer WiFi 7 in the modem but for me this was the right fit and price range for a brand I love

Got fed up with the supplied router modem combo from optimum and upgraded to this. One phone call and was set up easy. WiFi works great now, paired it with a netgear nighthawk XR1000 and can load all the videos I could wish for. First time I have bought a refurbished product and this has not disappointed me yet