Netgear C7800 Nighthawk DOCSIS 3.1 Cable Modem Router

Netgear C7800 Product Overview

The Netgear Nighthawk X4S C7800 is an ultra-high-speed DOCSIS 3.1 cable modem and AC3200 WiFi router in a single device. It is built for households that want maximum cable internet speed without paying monthly equipment rental fees to their internet provider. The C7800 is backward compatible with DOCSIS 3.0 using 32x8 channel bonding, and ready for gigabit DOCSIS 3.1 service where available.

With a 1.5 GHz dual-core processor, four high-performance active antennas, and simultaneous dual-band WiFi, the C7800 is well suited for streaming 4K video to multiple TVs, online gaming, video calls, and smart home devices running at the same time. Replacing your ISP modem and router with the C7800 can save up to $168 per year in rental fees, depending on your provider.

Speed and Performance

The C7800 is engineered for the fastest cable internet plans currently offered in the United States. In DOCSIS 3.0 mode it uses 32 downstream and 8 upstream SC-QAM channels. In DOCSIS 3.1 mode it adds 2 OFDM downstream and 2 OFDMA upstream channels for higher capacity and improved upload performance.

• DOCSIS 3.1 support, up to 10x faster than DOCSIS 3.0
• AC3200 dual-band WiFi (1,000 Mbps at 2.4 GHz with 1024-QAM plus 2,200 Mbps at 5 GHz)
• Quad-stream architecture (4x4 on 2.4 GHz and 4x4 on 5 GHz)
• 1.5 GHz dual-core processor with 512 MB RAM and 128 MB flash
• Beamforming+ focuses WiFi signal to your devices for stronger range and stability

WiFi Coverage and Capacity

Four external active antennas and high-power amplifiers provide WiFi coverage of up to 3,000 square feet, with capacity for up to 45 connected devices. Beamforming+ works on both 2.4 GHz and 5 GHz bands, which is helpful for larger homes with a mix of phones, laptops, smart TVs, and smart home devices.

Wired Ports and Storage

The C7800 includes four Gigabit Ethernet ports for fast wired connections to desktops, game consoles, smart TVs, and network storage. Two USB 3.0 ports support ReadySHARE for connecting an external hard drive and sharing files across your network, or for use with the built-in DLNA media server.

Netgear C7800 Specifications

ISP Compatibility

The Netgear C7800 is approved for use with major cable internet providers in the United States, including Xfinity from Comcast, Spectrum, and Cox. It supports gigabit cable plans and is ready for DOCSIS 3.1 service where the provider offers it.

The C7800 is not compatible with fiber, DSL, or satellite services such as Verizon Fios, AT&T Fiber, CenturyLink, DirecTV, or Dish. It also does not support bundled voice or phone services. To confirm your specific plan tier is supported, contact your internet provider before purchasing. You can also browse our full cable modem collection to compare alternatives.

Setup and Activation

Setup uses the Netgear Nighthawk app for guided installation on iOS and Android, or you can activate through your provider's website or customer service line. After connecting the coaxial cable and powering on the modem, you will need to register the device's MAC address with your provider. For step-by-step provider walkthroughs, see our modem activation guides.

What's Included

• Netgear C7800 Nighthawk X4S cable modem router
• Ethernet cable
• Power adapter
• Quick start guide

Frequently Asked Questions

Is the Netgear C7800 a modem, a router, or both?

The Netgear C7800 is a two-in-one device that combines a DOCSIS 3.1 cable modem and an AC3200 Nighthawk WiFi router in a single unit. You do not need a separate router with the C7800.

What internet providers work with the Netgear C7800?

The C7800 works with major cable internet providers including Xfinity from Comcast, Spectrum, and Cox. It is not compatible with fiber, DSL, satellite, or bundled voice services. Confirm plan tier compatibility with your provider before ordering.

What is the maximum internet speed the Netgear C7800 supports?

The C7800 supports cable internet plans up to gigabit and multi-gigabit speeds. In DOCSIS 3.0 mode it uses 32x8 channel bonding for fast speeds during peak hours. In DOCSIS 3.1 mode it can theoretically support up to 10 Gbps, depending on what your provider offers.

How much money can I save by buying the Netgear C7800?

Replacing your ISP modem and router rental with the C7800 can save up to $168 per year in equipment rental fees, depending on your provider's current rental rate.

How many devices can the Netgear C7800 support?

The C7800 supports up to 45 connected WiFi devices and provides up to 3,000 square feet of wireless coverage. It also includes four Gigabit Ethernet ports for wired connections.

Does the Netgear C7800 support phone service?

No. The C7800 does not support bundled voice or telephone service. If you have a cable phone plan, you will need a separate eMTA modem or an analog telephone adapter.

What is the difference between the Netgear C7000 and C7800?

The C7000 is a DOCSIS 3.0 modem router with 24x8 channel bonding and AC1900 WiFi. The C7800 is a DOCSIS 3.1 modem router with 32x8 channel bonding and faster AC3200 quad-stream WiFi, making it the better choice for gigabit cable plans.

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