Overview

  • MAXIMIZE YOUR CABLE INTERNET: A dedicated DOCSIS 3.1 cable modem lets you pair any WiFi router or mesh system you choose, so you can build the home network you want and upgrade your WiFi anytime without replacing your modem.
  • APPROVED FOR YOUR PROVIDER AND PLAN: Works with Xfinity internet plans up to 800Mbps, Spectrum up to 1Gbps, and Cox up to 1Gbps. Not compatible with Verizon, AT&T, CenturyLink, DirecTV, DISH, or bundled voice plans. ISP activation required after setup.
  • GET THE FULL SPEED OF YOUR PLAN: DOCSIS 3.1 supports Gigabit plans up to 1 Gbps for smooth 4K streaming, online gaming, and video calls, all at the same time. Actual speeds vary by plan and provider.
  • FUTURE-PROOF YOUR HOME NETWORK: Works with DOCSIS 3.0 and DOCSIS 3.1 cable networks today, ready for tomorrow’s Gigabit upgrades. Gigabit Ethernet port connects to any router or computer.
  • GUIDED ONLINE SETUP: Plug in the coax cable, activate through your web browser or by calling your provider, then connect the modem to your router with an Ethernet cable. Xfinity customers can self-activate online without a service call.
  • RELIABLE PERFORMANCE: DOCSIS 3.1 OFDM and OFDMA improve response times and keep speeds steady when the whole family is online. FCC certified for use in the United States.

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Specifications

Capacity & configuration

Modem Type
High speed

Dimensions & weight

Product Name
NETGEAR Nighthawk DOCSIS 3.1 Cable Modem CM1000, 1 Gbps, Gigabit, Guided Set Up, 1 Gig Port, Xfinity/Spectrum/Cox
Product Height
5.4 inches
Product Length
5.9 inches
Product Width
8.8 inches
Product Weight
0.84 pounds

Features

Brand
NETGEAR
Color
Black
Internet Service Provider (ISP) Compatibility
Cox Communications
Downstream Data Speed
1000 megabits per second
Upstream Data Speed
240 megabits per second
Channel Bonding
32 x 8
Number of LAN Ports
1
USB Ports
None
Quality Of Service (QoS) Traffic Prioritization
Yes
DOCSIS Compliant
Yes
ENERGY STAR Certified
No
Auto Connect
Yes
Gigabit Ethernet Speed
Yes
System Requirements
Microsoft Windows 7, 8, 10, Vista, XP, 2000, Mac OS or other operating systems running a TCP/IP network; Microsoft Internet Explorer 5.0, Firefox 2.0, Safari 1.4, or Google Chrome 11.0 browsers or higher
Voice Assistant Built-in
No
UPC
606449111071

Power & warranty

Model Number
CM1000-100NAS
Warranty - Parts
1 year
Warranty - Labor
1 year

Warranty & protection

Included manufacturer warranty

See manufacturer documentation.

Register your product with the manufacturer within 30 days of delivery.

Warranty service

Manufacturer warranty claims are handled by the manufacturer. We are happy to help you find the right contact: (888) 419-6820.

Customer reviews

Write a review
StewOct 10, 2026 · Verified purchase ★★★★☆

Good Cable Modem for the Price. - It connects easily and we have been happy with the results. Speed is not suitable for the top end speeds we can get from our ISP but it suits our needs.

TROYOct 2, 2026 · Verified purchase ★★★★★

Great Product - I have had the modem for a month and it has worked well. I have no complaints. I use it in my home to stream video and play online games; works well and I see no hiccups in its performance.

LavernLSep 26, 2026 · Verified purchase ★★★★★

Easy to install & set up - This was the second Netgear modem that I've purchased in the last 5 years. I've had some other brands that didn't last that long. It was super easy to set up. I really like this brand & it has had a great reputation for years. Yes, I would buy it again. I'm a 73-year- old lady. If I can do it, you can do it.

ROBINMSep 22, 2026 · Verified purchase ★★★★☆

Good overall - We have had to reboot this a few times, but overall a good product.

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Questions & answers

Ask a question

Email [email protected] or call (888) 419-6820 during business hours.

Free U.S. shippingOn every order. Leaves our store in 1–2 business days, arrives in 3–5 business days.
Free returns for 30 daysNo restocking fee. We email you a prepaid return label.
We can install it tooOptional in-home delivery, installation and haul-away on large appliances.
Talk to our team(888) 419-6820 · Mon–Sat