Nighthawk DOCSIS 3.1 Two-in-one Cable Modem + WiFi 6 Router Combo, 6Gbps (Certified Refurbished)

  • Certified Refurbished. Works with US Cable Internet Providers Xfinity ® from Comcast, Spectrum ® , Cox ® & more (not compatible with Cable bundled voice services or fiber Internet services)
  • Wireless connectivity is included. No separate modem is required.
  • For more ISP compatibility information: Which ISPs are compatible with my NETGEAR cable modem?
  • For more information on modems: What's a modem?
  • Nighthawk® AX8 8-Stream WiFi 6 Cable Modem Router has a built-in DOCSIS® 3.1 cable modem to deliver both the best WiFi and the fastest multi-gigabit internet throughout your home.
  • Help keep your family and your connected devices safe from online threats with trial included of NETGEAR Armor(tm) all-in-one internet security.
  • With a DOCSIS 3.1 modem, you get the best internet speeds available today – up to 10 Gbps download and 1 Gbps upload – and you’re prepared for any future upgrades from your provider.

WiFi 6 technology

up to 6 Gbps

up to 30

Nighthawk DOCSIS 3.1 Two-in-one Cable Modem + WiFi 6 Router Combo, 6Gbps (Certified Refurbished)

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WiFi 6 technology

up to 6 Gbps

up to 30

  • Certified Refurbished. Works with US Cable Internet Providers Xfinity ® from Comcast, Spectrum ® , Cox ® & more (not compatible with Cable bundled voice services or fiber Internet services)
  • Wireless connectivity is included. No separate modem is required.
  • For more ISP compatibility information: Which ISPs are compatible with my NETGEAR cable modem?
  • For more information on modems: What's a modem?
  • Nighthawk® AX8 8-Stream WiFi 6 Cable Modem Router has a built-in DOCSIS® 3.1 cable modem to deliver both the best WiFi and the fastest multi-gigabit internet throughout your home.
  • Help keep your family and your connected devices safe from online threats with trial included of NETGEAR Armor(tm) all-in-one internet security.
  • With a DOCSIS 3.1 modem, you get the best internet speeds available today – up to 10 Gbps download and 1 Gbps upload – and you’re prepared for any future upgrades from your provider.

WiFi 6 technology

up to 6 Gbps

up to 30

Model Number
CAX80
up to 6 Gbps
CAX80, up to 6 Gbps
$249.99current price $249.99
CAX30
up to 2.7 Gbps
CAX30, up to 2.7 Gbps

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Out of Stock

$249.99current price $249.99

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Frequently bought together

Refurbished with confidence

Every NETGEAR refurbished product is functionally tested, factory reset, and backed by a 90-day warranty, so it arrives ready for a fresh start in your home.

What you can expect



Tested for functionality

Every unit goes through production-equivalent functional testing, including checks of power, ports, indicator lights, and product-appropriate connectivity.

Reset and ready

Every product is factory reset to its original settings before shipping, so it’s ready for you to set up as your own.

Backed by NETGEAR

Every refurbished product comes with a 90-day warranty for added peace of mind.

Ready for a second life

Choosing refurbished helps extend the useful life of an existing NETGEAR product while giving you reliable performance for less.

A second life for technology

Refurbishing helps keep products in use longer.

When a NETGEAR product is suitable for refurbishment, we prepare it for a second life. When it can’t be refurbished, we send it to a certified e-waste recycler, where materials such as plastics, metals, electronics, and cables are separated and responsibly recycled.

From refurbishment through end-of-life recycling, we take the product lifecycle seriously.

Frequently Asked Questions

Your refurbished product is fully functional and has been tested before it ships. It may show minor cosmetic signs of previous use, but these do not affect product performance.

Yes. Every NETGEAR refurbished product goes through production-equivalent functional testing before it ships. Testing covers key functions such as power, ports, indicator lights, and connectivity appropriate to the product.

Every refurbished product goes through production-equivalent functional testing before it ships. Depending on the product, testing includes checks of power, ports and physical connections, indicator lights, and product-appropriate connectivity.

As part of our broader reliability validation process, sampled units also undergo thermal stability testing at 40°C for more than 10 hours to help confirm stable performance under sustained thermal load.

Your refurbished product includes the accessories needed for setup and use. See What’s in the Box on this page for the specific items included with this product.

Your refurbished product will arrive in a new, secure, and stable package rather than its original retail packaging.

No. Every refurbished product is factory reset to its original settings before it ships, so it arrives ready for you to set up as your own.

Every NETGEAR refurbished product is backed by a 90-day warranty.

Yes. Refurbished products can be returned in accordance with the NETGEAR return policy. See our Return Policy for eligibility, timeframes, and instructions.

You’ll still have access to NETGEAR support resources for your refurbished product. Refurbished products are backed by a 90-day warranty.

A NETGEAR refurbished product is a previously owned or returned product that has been tested and prepared for resale. Every refurbished unit goes through production-equivalent functional testing and is factory reset before it ships.

Technical Specifications

Dimensions :

10.4 x 8.5 x 4.3 in / 264 x 215 x 110 mm

Weight :

2.55 lb / 1.16 kg

WiFi Technology :

802.11ax Dual Band WiFi (AX6000). 2.4GHz AX: 4x4 (Tx/Rx) 1024 QAM 40MHz, up to 1.2Gbps. 5GHz AX: 4x4 (Tx/Rx) 1024 QAM 160MHz, up to 4.8Gbps

Speed and Range :

DOCSIS® 3.1 supports 1Gbps+ Internet speed

Modem :

Built-in high-speed DOCSIS® 3.1 Cable. OFDM 2x2+ 32x8 channel bonding

Number of Ethernet Ports :

Four (4) Gigabit Ethernet LAN ports. Dual Gigabit Ethernet Port Aggregation. One (1) 2.5Gbps Ethernet Port

Number of USB Ports :

One (1) USB 3.0 port—Connect storage. Devices to store & stream your own media

Key Features :

Eliminate monthly cable modem rental fees and save up to $168 per year**. Works right out of the box with Xfinity® from Comcast, Spectrum® COX® and more. 4X Better Performance than an AC Cable Modem Router—8 Stream WiFi with up to 1.2 + 4.8 Gbps† for ultra-fast wireless speeds*. More WiFi for More Devices—OFDMA allows efficient data transmission up to 8 devices at the same time. Uplink OFDMA improves scheduling during high volumes of upload traffic, particularly when that traffic is created simultaneously.§. Powerful Processor— dual-core 1.5GHz processor ensures smooth 4K UHD streaming & gaming. Multi-Gig Ethernet Port 2.5G—2.5 times the wired speed of a typical Gigabit port to be used for LAN or Internet connectivity. Smart Connect—Intelligently selects the fastest WiFi band for every device connection. One WiFi name for the entire home. Nighthawk® App—Easily set up your router and get more out of your WiFi. Includes remote access to manage your network away from home. WiFi 6 supports all current WiFi devices and is backward compatible with WiFi 5 and earlier generation devices

Security :

VPN Support—Secure access to your home network away from home. Firewall protection (SPI and NAT). Denial-of-service (DoS) attack prevention

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Cable Broadband Internet service

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Please check your Cable Internet Service Provider web site for data speed tier compatibility and to ensure it provides DOCSIS® 3.1 service, otherwise this modem will only work as a DOCSIS® 3.0 modem

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Not compatible with Cable bundled voice services

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Nighthawk® AX8/8-Stream WiFi 6 Cable Modem Router

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Ethernet cable

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Quick start guide

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Power adapter


NETGEAR limited warranty valid only if purchased from a NETGEAR authorized reseller and you register the device at https://my.netgear.com/register.aspx.


For warranty duration and details, click Learn More.




Technical support is available at no charge for a specified period.

Learn More


Installation GuideUser Manual