NETGEAR Cable Modem DOCSIS 3.0 (CM500) Compatible with Major Cable Providers Including Xfinity, Cox, For Plans Up to 400 Mbps

I installed my Netgear CM500 (and Netgear router) years ago. Both units are still going and I am very happy with them.

The CM500 is a great modem, BUT Spectrum no longer supports it. Do not purchase this modem if you have Spectrum as your ISP.

The modem arrived early, it worked perfectly after a call to COX, telling me to contact NETGEAR, because it was a modem issue is why it would not connect to my desktop or router. Netgear said it was my router, wrong. The next day a COX tech spent 4 hours at my home. He left telling me that I needed a new router and the internet to my desktop worked on some sites, did not work on other sites at all. For any COX internet customers, once you connect this modem, or any other brand, you HAVE to call the COX Sales department to have it activated, I repeat, call Sales. Also, I use Windows 10, you absolutely have to be logged in as the administrator, That is what I did, my desktop connected to the internet and I then connected the modem to my router and my desktop from the router and the modem has worked perfectly since then. I would buy from the Seller again, without a 2nd thought, I couldn't be any happier with their service. The modem has been an excellent buy and I am happy that I purchased it.

Ok product for the price

I hate this new world of product reviews and the "online" experience. Every time I say to myself, "I won't put a lot of time into this". So what do I do? I put a lot of time into researching these things. Why? Because there's this inherent need to read reviews and look at the negative before the positive. There are always more negative than positive reviews, simply because those who are pissed will write and those who are happy, move on with their lives. In this case, the negative review percentage was small in relation to the positive reviews and therefore a viable purchase. So after 2 hours of researching and reading, I made this purchase. Yes, I did all the research to make sure this would work with Time Warner/Spectrum 200mbps service. BTW, the only reason I am upgrading from my 50mbps UBEE which gets me 73mbps, is because Spectrum took me from 100mbps to 200mbps for free. Otherwise, I wouldn't have gone through all of this.Now yea! I ordered on a Sunday and received it Sunday night! Really, who cares. Well some might I guess. But since they felt the need to get it to me so fast what the hell, I took it. However, 3 days later I finally found the time to waste another 2 hours (and more now that I have to do this all over again plus spend time writing this review - ugh).So now on with the nightmare. Call on my magic jack which is hooked to my internet (of course) with my cell phone handy (which is a tracfone which is why I don't want to waste minutes). After 30 minutes of the preemptive strike,it was time to make the switch. Already I was feeling like this wouldn't work as the tech was having issues with the MAC address and it took way too long for this prep time - shouldn't take more than 10 minutes perhaps.Okay, the tech called me back on my cell phone. Now the minutes are ticking. 20 minutes later, the steady green simply would not happen. 40 minutes later, the tech did the "clear quarantine" even though I told him that they needed to do this last time I did this (a different long story). 60 minutes later, nothing, 80 minutes, nothing. Time to call it. Time of Death, 10:45am. Now to re-hook up my old modem. All of 2 minutes! Again, tried and true UBEE rock solid modem. Switching to a different modem altogether. Good luck to all those deciding on this model. I refuse to try again.I cannot say this was a problem with the modem or with Spectrum. In my 40 years in the IT world, I've seen almost everything. However, if this modem gave such problems, why bother. In this "new age" plug 'n play went out a long time ago and devices just work or they don't.Oh - BTW, I read some reviews where this modem got really hot to the touch. I did leave this modem turned on for the 3 days before I hooked it up and yes, it was quite hot. Much hotter than my UBEE modem, but then again, this modem is 1/3 the size with much less vents than the UBEE. I won't say this was the issue, but it did cause me concern as I leave this modem unattended upstairs and out of site. If I kept it, I probably would have put a smoke alarm near it.To those with success using this, may you have many uninterrupted happy years of service.Time to shop - oh joy...

Bought this unit 6 years ago. This cable modem is still ripping! It'll pull down 630 MB per sec. Solid stability. Just got off the phone with Spectrum (still not taking there free hardware). Having your own hardware is best! This modem and a good Wifi Router works like a champ.

My xfinity app had been showing for a few months a message that my current modem was no longer supported but may still work. Lately my WiFi router started to drop connection constantly so I decided to swap out both.The cheapest modem “recommended” by Xfinity was 139. Too much for what I needed with my 200mbps plan. I then looked at ones that were just compatible and I decided on the CM500-100NAS even though some people have posted reviews recently saying it’s no longer supported. But the Xfinity list of recommended and compatible modems that was last updated Nov 22, 2023 (they state that the list is updated quarterly) lists the CM500-100NAS as still being compatible for my service.I did not follow the included installation instructions given by Netgear. Instead I got on the Xfinity app with my phone using cellular data, and selected “account” and selected “activate xFi Gateway or Modem” under “Devices”. It stepped me through the installation process. Same process as when I installed my Motorola modem in 2020.It’s only been a few hours but no issues. Will update if anything goes wrong or I find Xfinity decides to not support this modem any longer in the next year.

Could not get it to connect to my provider. After 2 calls to Mediacom & 1 to Netgear, Mediacom informed me it was ecause after their upgrade 3.0 was the problem & needed a 3.1.