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NETGEAR

NETGEAR Nighthawk DOCSIS 3.1 Mid/high-Split Cable Modem (CM3000) – Approved for Today’s Fastest Speeds - Works with All Providers Incl. Xfinity, Spectrum, Cox - for Plans up to 2.5Gbps

  • Based on 4,021 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Wednesday, Jul 8
Order within 21 hours and 2 minutes
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Style: (NEW) 2.5 Gbps


Features

  • Mid/high-split DOCSIS 3.1 cable modem delivers up to 2.5Gbps of download speeds and 1Gbps of upload speeds
  • Specifically engineered for todays fastest DOCSIS 3.1 cable internet speeds that can only be accessed with mid/high-split technology, such as Xfinitys 2Gbps download speeds and 200Mbps upload speeds. Works with all major US internet providers
  • Blazing-fast download speeds powers your digital lifestyle with enhanced speed, capacity, efficiency, and response times
  • Impressive 10x faster upload speeds delivers seamless multi-family gaming, video conferencing and uploading large filessimultaneously. Plus provides easy remote access to your home security cameras and NAS files
  • For the ultimate in performance, link a NETGEAR WiFi 6E or WiFi 7 router or Orbi system to the CM3000 cable modem
  • Be ready for future Internet speeds with much higher performance levels
  • Connect for multi-gig Internet speed by plugging your routers multi-gig Internet port directly into the modems 2.5Gig port. Or connect the two Gigabit ports to a router with link aggregation for up to 2Gbps
  • Made for use in the US only

Description

Upgrade to faster speeds with the revolutionary DOCSIS® 3.1 mid/high-split cable modem from NETGEAR. The Nighthawk® CM3000 cable modem is specifically engineered to handle today’s fastest DOCSIS 3.1 cable internet speeds that can only be accessed with mid/high-split technology, such as Xfinity’s 2Gbps Internet download speeds and 200Mbps upload speeds. Your entire family can enjoy faster download speeds up to 2.5Gbps and unprecedented upload speeds up to 1Gbps for lag-free gaming, crisp video conferencing, smoother music and video streaming, and instant app downloads. And to push your Nighthawk’s performance even further, you can simply pair the CM3000 with a NETGEAR WiFi 6E or WiFi7 router or with our amazing Orbi system. The Nighthawk CM3000 works seamlessly with every major U.S. cable service provider.

Brand: NETGEAR


Internet service provider: spectrum, optimum, cox, xfinity, and more


Connectivity Technology: Ethernet


Compatible Devices: Router


Product Dimensions: 6.8"L x 3.7"W x 8.2"H


Connectivity Technology: Ethernet


Compatible Devices: Router


Number of Ports: 2


Maximum Downstream Data Transfer Rate: 1 Gigabits Per Second


Maximum Upstream Data Transfer Rate: 200 Megabits Per Second


Data Transfer Rate: 1000 Megabits Per Second


Number of Ethernet Ports: 2


Item Dimensions L x W x H: 6.8"L x 3.7"W x 8.2"H


Color: Black


Brand: NETGEAR


Internet Service Provider: spectrum, optimum, cox, xfinity, and more


Modem Type: Cable


UPC: 606449157185


Manufacturer: NETGEAR


Mfr Part Number: CM3000-100NAS


Model Number: CM3000-100NAS


Unit Count: 1.0 Count


Item Weight: 1.1 Pounds


Warranty Description: 1 Year Limited


Built-In Media: Nighthawk High-Split 2.5Gbps Internet Speed Cable Modem (CM3000), One (1) Ethernet cable, Power adapter, Quick install guide


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 8

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Solved The Issues
I had bought a new laptop and was having issues that I thought would mean returning it. It would show that I had great connection to the router but no wifi. I constantly had to refresh to make it connect. Thought it was the laptop, but then it started happening on other devices. My old modem was 5 years old. I started thinking maybe that was the problem, so I decided to upgrade that before blaming my devices. This modem was easy to activate through the internet provider's app. Lo and behold - it solved all the connection issues. Devices that connect to my wifi are buzzing along now. So, it was just a case of my old modem not being up to the task anymore. The old modem was also a Netgear. I was pleased with the service I got from it, so when it was time to upgrade I went with Netgear again. Very pleased with the results. ... show more
Reviewed in the United States on April 26, 2026 by GAGA54
    • Incredibly fast and reliable speeds and not a single disconnect or drop.
Incredibly fast and reliable speeds and not a single disconnect or drop. Its expensive but you get what you pay for. Very stable connection.
Reviewed in the United States on May 26, 2026 by Dyllan crow
    • Best modem & customer service
Description: This modem (paired with the Nighthawk router) are flawless. They've worked perfectly since setup. And speaking of which, Netgear's customer service is amazing. I had a few issues since I'm "tech challenged", and the very patient tech rep stayed on the line with me until both the modem and router worked great. (Note: Most of the issue was my error. For most people, it would probably be easy setup without customer service.) ... show more
Reviewed in the United States on May 29, 2026 by Grammy
    • Flawless performer
Title: Performed flawlessly Description: Easy to install & performed flawlessly as soon as I turned it on. Connects to the highest speed offered by Xfinity.
Reviewed in the United States on April 16, 2026 by J U
    • What a mess!
Well, I bought this in March as my old Netgear modem took a dump (2 years old). It worked great for about 5 months, then it kept dropping the Internet connection. I assumed it was my ISP, so I had them come out multiple times. We finally realized it was my pretty new modem. I contacted Netgear and they helped, but I would write to them, then get a reply a day or 2 later. By this time, I was unplugging it 2-3 times a day and letting it reboot. I couldn't wait for Netgear to figure out the issue, so I bought an Arris. Problem solved! My connection has been working great since the new modem. This thing was pretty expensive. I couldn't keep switching modems to answer the questions Netgear was asking. It sounds like their newest O/S update clashes with my ISP, but of course nobody will admit that (Netgear or ISP). So here this expensive modem sits on the floor and Netgear closed out the issue because I couldn't answer them in 48 hours as I was out of town. No more Netgear for me! ... show more
Reviewed in the United States on October 22, 2025 by Ron
    • Blazing Fast, Future-Ready Cable Modem for Xfinity
I recently upgraded to the NETGEAR Nighthawk CM3000 DOCSIS 3.1 cable modem, and it has been an exceptional performer for my high-speed internet needs. Here's my experience: Pros: Supports Top-Tier Speeds: This modem is approved for cable plans up to 2.5Gbps, making it perfect for today’s ultra-fast internet and future-proofing for years to come. My speeds are consistently reliable, with no dips or interruptions, even during peak hours. Broad Compatibility: It works seamlessly with all major cable providers, including Xfinity, Spectrum, and Cox. Activation with Xfinity was a breeze, taking only a few minutes to get up and running. DOCSIS 3.1 Technology: The mid/high-split support ensures better upstream and downstream capabilities, making it ideal for heavy internet users like gamers, streamers, and remote workers. Compact Design: The sleek, vertical design saves space and blends well with my other networking equipment. Cons: No Built-In Wi-Fi: This modem doesn’t include Wi-Fi capabilities, so you’ll need a separate router for wireless connections. For me, this wasn’t an issue since I paired it with some other routers Price: It’s a bit pricey compared to some other modems, but the performance and future-proofing make it worth the investment. ... show more
Reviewed in the United States on December 11, 2024 by chrisian
    • Best 3.1 High-Split ready modem - Spectrum - Large size
The modem replaced a SB8200 on Spectrum and the firmware V6.01.03 is correctly working on Spectrum. The modem works great and is fast. It is VERY tall/large compared to other non-WiFi standalone modems. The admin page to see signal levels and logs is very annoying to get to work on a PC browser and it is highly recommended to check this page on a mobile device browser. The info provided in the cable connection diagnostic admin page is ample and should satisfy most users for signal diagnostics. The advanced administration tab Event Log provides identical information the Arris models show and is the same a Spectrum tech would have access to with their Scope software for their provided modems. I'm happy with the performance of this modem overall, but as stated already a few nitpicks is the overall size of the modem and the wonky desktop browser access of the admin gui page... really strange. ... show more
Reviewed in the United States on October 9, 2025 by bobby w
    • Best Upgrade
Description: This is the best upgrade to my home internet that I've ever made! Setup was easy, technical support was super helpful and polite! Netgear has always been my choice for internet equipment!
Reviewed in the United States on May 17, 2026 by Kenneth Larriu

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