NETGEAR Cable Modem CM1000 / CM1000v2 Reviews

NETGEAR CM1000 Cable Modem Reviews

​The NETGEAR CM1000 was the first DOCSIS 3.1 modem released. The CM1000 modem supports speeds up to 1 Gbps, though most households are far from that. However, this would be the last cable modem you’ll need for many years to come. It is compatible with most cable companies including Comcast XFINITY 1 Gig, Cox Gigablast, Grande 1 Gig, and more.  

NETGEAR CM1000 Cable Modem Overviews

NETGEAR CM1000 Cable Modem is the best modem that supports the Gigabit internet service. It has many features, which make it different from other modems available in the market. The modem is an all-in-one device; it not only provides internet services but also works as a wireless router and voice adapter to provide you with triple services in a single device.

It’s quite easy to use NETGEAR CM1000 Cable Modem for any person who wants to connect their devices with a high-speed internet connection. It supports IPv4 and IPv6 network technology. This device works at blazing fast speeds of up to 1 gigabit per second than any ordinary cable modem.

This product comes up with two USB ports on its front panel; thus, you can connect your USB flash drive or hard disk to it. You can also use the same ports for connecting your printers or fax machines. It supports many operating systems like Windows, Linux and Mac Os X, etc.

NETGEAR CM1000 Cable Modem has a new design style that makes it simple and easy to set up any place in a home or office environment. The modem is available at the same price as other cable modems available in the market.

NETGEAR CM1000 Specs

  • Fast download and upload speed enables up to 1 Gbps‡ download speeds
  • 2 OFDM downstream & 2 OFDM upstream channels for DOCSIS 3.1 connection
  • 32 downstream and 8 upstream channels for DOCSIS 3.0 connection
  • Meets DOCSIS 3.1 specifications and is backward compatible with DOCSIS 3.0 networks

NETGEAR CM1000 Reviews


The CM1000 is styled with the latest in mesh design, with a black fabric covering both sides of the box. This allows airflow to better dissipate heat.

Power supply

Since it’s classified as an “AC1750” modem by NETGEAR, you are required to use your own AC adapter if you want something that actually will work for speeds beyond 16×4 or so. However, they do not just give you any old power brick – instead, they give you one of their fancy new switching wall-warts with active PFC!

Don’t worry about compatibility through – the included power brick runs on 100-240VAC at 47-63 Hz and outputs 12VDC @ 1.5A. They also give you a nice little velcro strap to keep the extra power supply cord bundled together and out of your way.


It has 2 USB ports (just like all their other Nighthawk routers) – one labeled “B” that is USB 3, and another unlabeled port that works as USB 2. I connect an 8TB Seagate drive to this for my backups and it works fine, but occasionally I notice it slowing down as if the router is overloaded (I’m currently only using about 20% of its total capacity).

The front also has a small LED indicator section right next to the network cables where you can see what each port’s status is at a glance. This will blink green rapidly for 10/100, and blink yellow for 10/100/1000. It will stay lit up in a solid color if there is no device plugged into the port. And lastly, two little holes on the front are rubber-sealed to make sure your cables don’t accidentally come unplugged while you’re sitting on top of it.


The ROM chip they use is really only 16MB (in fact it’s an 8MB x 2 chips stacked), so you can see why such a small amount of space would be used for OpenWRT. Instead, they decided to run DD-WRT which takes up more space but makes sense since it’s commercial software that needs to remain compatible with new releases and not have its code changed willy-nilly.

Ease of use

This thing is as easy as any other router to set up and comes with a CD-ROM with instructions on how to do so if you have no idea what wireless settings are. It’s all pretty straightforward, really. The only real downside I can see here is that there really isn’t much you can change – your static IP and MAC address (and heck even DDNS ID) is preset by the manufacturer and cannot be changed by end-users. Aside from that though, everything else seems perfectly normal besides some new QoS features they added in for cable modems like this one.


There’s an option under “Network” labeled “Cable Bandwidth” which allows you to choose between Auto (best for xDSL connections), 20×4, 10×4, 8×4, and 4×4. Auto seems to work great for me here – it prioritizes whatever speeds your ISP gives you from 16 up to whatever speed you have subscribed. The only thing about this is that DOCSIS information shows up in your status screen at all times instead of hidden like traditional gateways where they can’t tamper with your bandwidth allocation if a connection is down. However, the tradeoff is understandable once you learn what Netgear has done here:

Support for IPv6

This isn’t common enough yet but supported nonetheless! In fact, this is what NETGEAR CM1000 had to say about the matter:

” IPv6, also known as IP next generation (IPng), provides more levels of addressing than our current Internet Protocol version 4 (IPv4). The new standard increases the address size from 32 bits to 128 bits, resulting in billions of addresses. These addresses will help support the future growth of devices that require access to the Internet, such as cell phones and PDAs.”


This modem supports WPA2-PSK out of the box – no firmware upgrade necessary. WPS is supported but one has to be very careful not to let any device connect to it without knowing which key they are using or else you can have your PW reset. It has an SPI firewall built-in to protect against the usual hacking attempts you might see on other devices – I routinely check that IPs are blocked at different levels like TCP, UDP, ICMP, etc., and they are indeed properly protected here. Everything works as it should.

Pros & Cons


  • Ethernet port on the modem
  • DOCSIS 3.1 for faster speeds
  • Two-year warranty
  • The NETGEAR CM1000 has a very simple setup, thanks to the fact that it supports both wired/wireless connections.
  • Connecting it to your router (or any other device you want to use with the modem) is simply a matter of using an Ethernet cable. Setting up the CM1000 is virtually effortless thanks to its quick self-activation process.


  • This model does not have built-in WiFi, so you’ll need an access point or wireless router if you want that functionality. Also, there are no USB ports for sharing files/media on the go.

CM1000 User Manuals and Guides

What is the difference between the NETGEAR CM1000 and CM1000v2?

The only difference between the two is a couple of minor hardware changes inside of the modems. They both operate the same and will be approved by your ISP as the same. Basically, when NETGEAR went to manufacture more of these, the original hardware was not available so it had to be substituted.


The NETGEAR CM1000 is an excellent cable modem – but it’s not for everyone. Most people won’t want this because of its lack of low-level tinkering options compared to the alternatives (which also tend to be much cheaper). However if you’re one who doesn’t mind paying a couple of extra bucks every month just so you can have hassle-free internet without having to worry about bandwidth caps or ISP disputes, then this is definitely the right choice for you.

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