Netgear CM2000 Review

Netgear CM2000

Our Verdict


The Netgear CM2000 is a DOCSIS 3.1 cable modem compatible with all major ISPs. 

The CM2000 is a reliable, high-performance modem, and its price tag reflects that. And while it’s not for everyone, if you are looking for a future-proof modem capable of high speeds, you came to the right place.













We’ve tested a good amount of modems here at Networks Hardware, and we can confidently say the CM2000 sits close to the top.

Its blazing fast speeds are almost too much for most households. But its intention is very clear: a stable, fast performance that you can rely on.

That, unfortunately, comes at a price.

Netgear CM2000 Overview 

Netgear CM2000 overview

The Netgear CM2000 is a DOCSIS 3.1 modem. This means two things:

  • It’s not a router, so you’ll need to pair it up with one if you want to connect more than a single device or use Wi-Fi.
  • It only works with cable internet providers.

That being said, the CM2000 is compatible with every major ISP, making it a strong option for those who rather own their hardware than rent it.

It supports the newer DOCSIS 3.1 version, which means it should be able to serve you for years to come. 

And while we don’t like that it only has a single ethernet port, it does support connections up to 2.5 Gbps (2,500 Mbps), which is exactly what you want from a DOCSIS 3.1 modem.

However, its price is hard to justify if you have a connection of 1 Gbps (1,000 Mbps) or less. For around the same cost, you can get a high-quality DOCSIS 3.1 modem router combo that supports up to 1 Gbps like the Motorola MG8702.

But if 1 Gbps connections simply don’t cut it anymore for you, you’re in for a treat.

Netgear CM2000 Specs

TypeCable Modem
Wi-FiNo Router
StandardsDOCSIS 3.1 & DOCSIS 3.0 32×8
Top WAN speed2500 Mbps
PortsOne 2.5 Gbps Ethernet port & one coax port
Top internet plan supported.2500 Mbps
Supported ISP’sArmstrong, Atlantic Broadband, Comcast Xfinity, Charter Spectrum, Cox, GCI, Grande, Mediacom, Midco, Suddenlink, WOW, Sparklight, Optimum, RCN, Wave
Not supported ISP’sN/A
Weight1.02 pounds
Dimensions8.2 x 6.8 x 3.7 inches

You can find the CM2000’s complete spec sheet at Netgear’s official website.

Performance – 4.8

Without a doubt, the CM2000’s greatest strength is high performance.

You have two things going in your favor here. One, the CM2000 is a Netgear device. This means reliability and hardware you can trust.

Pair that with a 2.5 Gbps LAN port, and you get a high-speed and trustworthy networking experience. 

With the CM2000 on hand, your focus should be your internet plan.

Using this modem with a 300 Mbps plan is borderline crazy. There are much cheaper options that can offer the same amount of reliability. Even other Netgear devices like the CM1000 are better suited for the task if it’s the brand you’re looking for.

The CM2000 needs to be paired with internet speeds that match its capabilities.

In our opinion, you should use the CM2000 with a plan no slower than 500 Mbps. And preferably 1000 Mbps.

Design – 4.0

In general, the Netgear CM2000’s design is good.

Netgear CM2000 overview

It looks modern, aesthetically pleasing, and it definitely screams performance.

But if you like being nitpicky, it could be better.

Let’s not forget the CM2000 is a stand-alone modem, not a gateway. This means you’ll probably be pairing it with a separate router.

Netgear CM2000 from the side

The problem is that the CM2000 is chunky and wide (even though it’s vertically oriented), which means you’ll need a good amount of shelf space. 

Since it’s just a modem with two ports on the back, one coaxial and one ethernet, most of the device is just black plastic. 

Netgear CM2000 backside 2

So, when looking at it from the back, you can’t help but feel it’s too plain or that they could’ve made it much smaller or sleek. It feels “empty”.

Once set up and looking at it from the front, the story is similar. The LED lights for power, upstream, downstream, and WAN connection are not too bright. Their white color also helps the device look more premium.

Netgear CM2000 front

However, you get the same feeling from the back, the status lights take up just a portion of the upper half of the device, and the rest is a sea of black plastic again.

Compatibility – 4.8

The CM2000 is a DOCSIS 3.1 modem. Your cable internet provider needs to support it in order for you to use this modem.

And even if it does, compatibility is hard to guarantee. That being said, you can be confident the CM2000 is compatible with all major ISPs and then some. 

Here are some providers we know will work with the Netgear CM2000. But keep in mind your ISP might still be compatible even if not on this list. Always double-check compatibility before purchasing any modem or router.

Approved for:

  • Comcast Xfinity
  • Spectrum
  • Cox
  • Sparklight
  • WOW
  • Suddenlink (not recommended for plans below 200 Mbps)
  • Armstrong
  • Breezeline (formerly Atlantic Broadband)
  • Astound Broadband (Grande)
  • Astound Broadband (RCN)
  • Astound Broadband (Wave)
  • Mediacom 
  • Optimum (in some areas)

Setup – 4.6

If all goes well, setting up the CM2000 should be a breeze. It includes some easy-to-follow instructions that should get you up and running.

Netgear CM2000 set up

If you do run into some trouble, it’s most likely on your ISP’s side. They could not have activated your coaxial connection yet, for example.

What the Netgear CM2000 comes with
What it comes with

Here’s a quick rundown on how to set up the CM2000:

  1. Connect the coaxial cable to the router.
  1. Connect the power cord.
  1. Turn on the modem.
  1. Connect the modem to a computer via ethernet, or connect it directly to your router (if you connect it to a router, make sure to connect a device to the router).
  1. Open a web browser. Browsing anywhere should redirect you to the activation page.
  1. Enter the modem’s MAC address (usually found at the bottom or back of the device)  and any other requested info.

Or, you could call your ISP and set it up alongside them on the phone if you prefer.

Once set up, you can access your modem’s settings by entering into any web browser. 

Your modem’s settings can help you change its password, get more information about the device, and give you access to event logs for troubleshooting. But it’s not something you usually need to access. 

For more about the CM2000’s setup, check out this Netgear document.

Value – 3.7

The Netgear CM2000 is a great device, but you probably know that at this point. 

The thing is, at its price point, it better be. 

We have few bad things to say about it, but its price is almost hard to justify. 

Depending on your internet plan, you could get both a modem and a router (or a modem/router combo) for the price of a CM2000. It’s definitely not for those looking to stretch their dollar or looking for a good deal.

“You get what you pay for” is surely applicable to the CM2000. And in this case, what you pay for is a lot.

Netgear CM2000 Reviews

There’s no lack of reviews for the CM2000, and most of them are overwhelmingly positive. 

The performance is there, and people confirm it left and right. That’s not an issue, and it gets 5-stars from us there, too.

However, some people are unhappy about Netgear’s warranty and support.

Compared to other brands with 2-year warranties and unlimited support, Netgear only offers 90 days of support and a 1-year warranty.

Some people found it particularly annoying that they couldn’t get support from Netgear even before the 1-year warranty expired. 

If you need help after 90 days, users claim Netgear asks them to purchase a support plan for an additional cost. After the support window has passed, your only hope is a replacement device. And that’s only if you can prove yours broke down through no fault of your own.

Netgear CM1000, Arris Surfboard SB8200, Motorola MB8611, Arris Surfboard S33, and Netgear CM2000
Netgear CM1000, Arris Surfboard SB8200, Motorola MB8611, Arris Surfboard S33, and Netgear CM2000


Here are some alternatives to the CM2000.

Netgear CM1000

Netgear CM1000

The Netgear CM2000 is for those seeking the absolute fastest options out there, and its price tag reflects that.

People looking for great performance but on a tighter budget should consider the Netgear CM1000. 

It’s also a DOCSIS 3.1 modem, so it should be future-proof as well. However, it only has a single Gigabit Ethernet port.

That means this modem, while very similar to the CM2000, will only support internet plans up to 1000 Mbps.

Arris S33

Arris Surfboard S33

Looking to get away from Netgear? Or maybe you’d like to save a bit of money while still getting that sweet 2.5 Gbps port

No matter which reason, the Surfboard S33 is a great option for those that want to steer away from Netgear, or even for those looking to save some shelf space.

Performance between the two are very similar, so it mostly comes down to personal preference. 

The S33 is smaller, white, and less threatening. While the CM2000 is unapologetically bold, sleek, and modern.

Netgear CM600

Netgear CM600

If the CM2000 (or even the CM1000) is way too much for your needs, but you want to stick with Netgear, the CM600 is an amazing option.

It’s a DOCSIS 24×9 DOCSIS 3.0 modem, so it’s better suited for internet plans up to around 600 Mbps max

Since DOCSIS 3.0 is on its way out, it’s not as future-proof as the CM2000. But certainly a good choice for those on a tighter budget and slower plans.

Bottom Line

The CM2000 is a beast of a modem capable of handling the highest cable internet plans on the market with ease. 

On top of that, it’s compatible with most if not all major cable internet service providers.

It’s so fast, in fact, that we can’t recommend it to most users. Especially given its price. 

If your internet plan is below gigabit speeds, you can save some serious money by going with another device.

But if you plan to make good use of the full 2.5 Gbps speed the CM2000 can handle, you’re in for a fun, fast, and reliable ride.

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