NETGEAR Nighthawk Cable Modem CM1200 - Compatible with All Cable Providers Including Xfinity by Comcast, Spectrum, Cox | for Plans Up to 1 Gbps | 4 x 1G Ethernet Ports | DOCSIS 3.1, Black
Condition: New
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
15 left in stock
Arrives
Monday, Aug 3
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Style: 2 Gbps
Features
- Compatible with major cable internet providers including Xfinity, Spectrum, Cox and more. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and any bundled voice service
- Works with any WiFi router: Connect any WiFi router to this modems Ethernet port to support all your wireless devices
- Save monthly rental fees: Model CM1200 replaces your cable modem saving you up to 168 dollars/yr in equipment rental fees
- Four (4) Gigabit Ethernet ports give you fast wired connections to your computer, separate WiFi router, printer, game box, and other devices
- Modem technology: Engineered with 32x8 channel bonding, OFDM 2x2, and DOCSIS 3.1
- Multi-gig ethernet: Link aggregation combines two 1G ports into one 2G port for faster wired ethernet speed.
Description
Nighthawk Multi-Gig speed Cable Modem by NETGEAR supports link aggregation to deliver true Multi-Gig Internet speeds. It improves your internet connections and provides smooth online streaming and gaming. This DOCSIS 3.1 cable Modem is ready for today's service plans and future upgrades for XFINITY from Comcast, spectrum & Cox.
Brand: NETGEAR
Internet service provider: Cox, Spectrum, Xfinity
Connectivity Technology: Ethernet
Compatible Devices: Cable Internet Providers, WiFi Routers
Product Dimensions: 6.1"L x 3.4"W x 10.3"H
Connectivity Technology: Ethernet
Compatible Devices: Cable Internet Providers, WiFi Routers
Number of Ports: 4
Maximum Downstream Data Transfer Rate: 2000 Megabits Per Second
Maximum Upstream Data Transfer Rate: 1000 Megabits Per Second
Data Transfer Rate: 800 Megabits Per Second
Number of Ethernet Ports: 4
Item Dimensions L x W x H: 6.1"L x 3.4"W x 10.3"H
Color: Black
Brand: NETGEAR
Internet Service Provider: Cox, Spectrum, Xfinity
Modem Type: DSL
UPC: 606449140750
Global Trade Identification Number: 50
Manufacturer: Netgear
Mfr Part Number: CM1200-100NAS
Model Number: CM1200-100NAS
Unit Count: 1.0 Count
Item Weight: 2.2 Pounds
Warranty Description: 1-year warranty
Built-In Media: Nighthawk Multi-Gig Speed Cable Modem—DOCSIS 3.1 (CM1200); Ethernet cable; Quick install guide; Power adapter
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 3
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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- Financing through Google Pay
Learn more about financing & leasing here.
Top Amazon Reviews
Style: (NEW) 2Gbps
About one month in, no errors, easy to setup, compatible with my ISP and stable speeds. A good purchase!
Reviewed in the United States on April 12, 2026 by Anthony
Style: 2 Gbps
The Nighthawk modem and router upgrades for me were an excellent choice for my internet needs. It's crazy but the modem came out of the box looking like a Bird of Prey. Both devices were easy to install. I especially appreciate the mandatory registration required for my product security. This level of product is providing me with outstanding signal strength and quality. I would highly recommend this reliable and affordable product for anyone seeking to upgrade their system. The performance is beyond compare.
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Reviewed in the United States on October 12, 2025 by Amazon Customer
Style: 2 Gbps
It’s a good modem. I had another of the same model for years and then something went screwy (the service provider was making changes, there was a power outage which probably resulted in a power surge). So I was getting a flashing download light. I spent hours with tech support from my service provider and I insisted it was a problem on their end. They kept telling me to buy a new modem. So I finally did buy another one and guess what? It wasn’t the modem. It does appear there was something funky with my router, which I also replaced but I’m still pretty sure the issue was with my provider which they had fixed by the time I got my new router. Anyway I kept my new modem even though I don’t need it because it can provide such speed it is future proof for many years and obviously a good modem as my old one which I’ve had for years still works. So when my old one of these craps out I’ll just hook up my new one.
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Reviewed in the United States on April 3, 2023 by TM
Style: 2 Gbps
I activated this modem on my existing xfinity account fairly easily with the xfinity android phone app and xfinity account login. The fast TP-Link wifi router I connected to it is working great and much faster than the xfinity wifi. I first set up the wifi router using the xfinity modem and it worked that way too. I noticed later that on the box it says that the xfinity speed supported for this modem is only 800mbps, but the xfinity compatible routers page states that this modem supports 1Gbps xfinity speed. The unexpected issue is that anything else I have plugged in to the other ethernet ports on the modem do not get an internet connection. The main wifi router connection does work though and the port lights up green on the modem but the other devices light up amber (the other devices do work connected to the wifi router ethernet ports). Tech support and documentation say that an amber light means it is a 10 or 100 mbps connection. Tech support rep said the connection "should work" but nothing will connect to the internet if the light is amber for that ethernet port on the modem(she is wrong, it is not a router or multi lan connect device). Documentation does not say either way but diagram on box shows picture of router, computer, or "compatible routers" connected to the ethernet ports, but nothing is explicitly stated. My computer did connect to the modem's ethernet port and got access to the admin setting page for the modem, but even a second brand new wifi router I have would not get a green light or internet connection, and a Roku ultra didn't work (would not connect to internet). Other than that, and no clear info in documentation on the ports issue, features or specifications, the modem works as indicated, but it is basically working as a 1 port modem with the option of technical set up using the other ports for a single port function. Again, it is a modem with no router functionality, i.e. no multi-port lan connect functionality. Just a side note that nothing on my xfinity accounts billing has updated after the netgear modem activation and there is nothing on my xfinity account to return the xfinity modem so I will have to call them to remove the $15/mo for that and an appointment or return code to return it to them. Update: I called them and they essentially just did a new service plan without the modem, but with the other discounts for the 1 year contract renewal. There was no return code or anything provided, she just said to take the modem and power cord to UPS, they scan the bar code on it box it and return it to xfinity per their agreement with comcast and I did that. It takes "up to 2 weeks" for them to receive it, process it and remove it from your account billing - it was 2 days in my case.
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Reviewed in the United States on September 3, 2024 by Amazon Junky
Style: (NEW) 2Gbps
Upgraded internet plan to 500mbs and am completely satisfied with the swap out from my old DOCSIS 3.0 Netgear modem/cable combo. Connected this modem to a TP-Link XE75 Pro mesh system and now have 300-400mbs throughout my home and 200mbs outside on patio. Could not be happier with this unit. Setup was very easy with the only minor problem of activating with ISP. Had to call to have them activate as the ISP website would not recognize unit. Also, existing 2.4ghz only cameras had to be factory reset to allow them to be connected to the network. Overall very pleased.
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Reviewed in the United States on April 2, 2026 by johnlb1234
Style: 2 Gbps
LAST UPDATE: I now have Frontier Fibre Internet. I sold my cable modem and it was still working great when I did. I am still using the TP-Link Deco x20 (x3 nodes backhauled) and my network has been rock solid all along. I still will never go Netgear again. UPDATED REVIEW: TLDR Listen to Reviews, Horrible Customer Service, 90 Warranty ONLY - You Have Pay for Anything After that! Garbage Equipment. Had Two of these Die!! I should have listened to reviews of this CM1200 Cable modem! First modem I got was garbage and after a month of trying to trouble shoot why my new network setup was't working, it turned out to be the modem. So I got that one replaced with a like kind CM1200. Worked OK for the 5 months I've had it, but I didn't realize what torture I have been living with by doing every other day restarts until the unit completely crapped out. Intermittent dropouts of network connectivity, constant reboots of the modem to get it connected again, which progressively got worse and worse until I had to restart the modem at least every 2 hours just to have connection again. I finally got to the point where i bought a competitors modem (Arris SB8200 Cable Modem Only, and LOVE IT!) and I have been actually sleeping at night again. I literally had dreams at night that the network was down and I had to get up to get it working and couldn't. Never lost sleep over something so ridiculous before, but I did. I've had my SB8200 high speed modem for two weeks and its a joy to come home and not have to hear my kids tell my that the internet has been out again for the last 4 hours. Never again Netgear; you have burned me for the last time. ON TOP OF THAT, the whole pay for service on a product that is less than a year old is INSANE!!! This was the service call: "Hi whats your problem" "My modem is losing constant network connection." "Is the light on for etc, etc, etc, etc?" "Yes, they are all on at the moment, but after a couple of hours, I lose connection even though the lights are on." "Oh, your equipment is fine, so it's not that. But if you want to purchase a service agreement we can forward your issue to our troubleshooting team...." CLICK.... I hung up on that B.S.! WTH is that!!! Company essentially holding me hostage with a $180 piece of garbage paperweight and they wont honor a one year warranty on unless I pay for a service contract. Absolute crap I tell ya. Never again Netgear, never again. I said never!! Stay away from this product, and essentially any of their others. I've had a gaming router of theirs before too, and it had similar issues that I replaced that with a TP Link Deco x20 Mesh Router, and it work awesome. Just dont buy these guys crap, you will regret it in the end. FIRST REVIEW: So the first cable modem I got had to go back. Constant internet drop outs, restarts, reboots, start over! It was a headache for two weeks trouble shooting. I had upgraded my internet service, cable modem and then mesh routers within two weeks. The cable modem/service were first and connection was intermittent. So figured it was my older gaming router and I needed mesh network upgrade for the house and kids demands for connection. Replaced with wifi mesh router and it was a crap shoot for many days. I thought the new router was no good, but then I got a replacement cable modem to rule that out. Turns out my Cm1200 was bad. The replacement has been working great and now I have to update my review on the Wifi routers that I lambasted. Knocked off one star on this cable modem due having to troubleshoot and replace the original purchase. But so far so good. Hope it stays that way.
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Reviewed in the United States on March 13, 2021 by Jason Gaines
Style: 2 Gbps
My new Netgear modem is both faster and more reliable than my previous rented modem from my ISP.
Reviewed in the United States on April 9, 2026 by Gary C.
Style: 2 Gbps
I got this CM1200 to replace an Arris SB8200 that I had for two years or so. The Netgear CM1200, so far, has not dropped the connection since I got it, and is reporting significantly fewer errors than the Arris SB8200 did on the same connection. My home is far from the cable company head-end, and their system commands our modem to transmit with high upstream power so that our signal will reach them. The SB8200 reboots when it is commanded to about 40 dBmv per upstream channel, dropping the connection. This is noted in the log as "Dynamic Range Window Violation". The Netgear CM1200 is capable of a higher transmitter power, and happily exceeds the 40 dBmv that was the show-stopper for the Arris. Both modems had "extended upstream power" enabled. The CM1200 is running 35 dBmv on 4 upstream channels and 39.3 on the fifth, and I've seen it commanded to 41.5 dBmv so far without a need to reboot. Both modems are probably using the Broadcom BCM3390 chipset, the log entries of both modems look similar so the firmware is probably related. Also, the Netgear CM1200 has an error log, which persists across a power-clear, while the Arris SB8200 _used_ to have an error log, and no longer does. It got removed with a firmware update pushed by Comcast Business during the past year. Was it removed because more memory was needed for another purpose, or because that log is just too incriminating about poor cable performance? Nobody's going to tell me. The Netgear CM1200 has four ethernet ports, all usable, while the Arris SB8200 had two ports, and the second was only usable with port-bonding turned on (which means both would be connected to the same device). The Netgear CM1200 can bond two ports while the other two remain gigabit ports, or all 4 can be used as gigabit ports.. Having 4 usable ports means I can take an ethernet switch out of my network setup, and have one less thing to fail. The modem contains Open Source software, and Netgear properly and prominently displays the GPL license. They don't however, have the source code on their Open Source site (use Google) at this writing. The source code for the next older modem is present, and is probably similar.
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Reviewed in the United States on September 1, 2020 by Bruce P.