Netgear CM400 Cable Modem DOCSIS 3.0 8×4 343 Mbps CM400-100NAS

Description

Genuine Netgear CM400 Cable Modem

Brand: Netgear (Original OEM hardware)

Connect reliable broadband service with this
genuine OEM cable modem designed for
cable internet providers like Comcast Xfinity.

This modem supports:

• High-Speed Cable Internet (DOCSIS 3.0 Data)
• Up to 343 Mbps (8×4 channel bonding)

Compatibility

• Compatible with major cable providers (Comcast Xfinity, others)
• Works with most standard home routers via Ethernet
• Ethernet (RJ‑45) output for router connection

Note: This modem does not support voice/telephone service.
Compatibility with modern gigabit plans is not guaranteed.

Included

• Netgear CM400 Cable Modem
• AC Power Adapter
• Original Retail Box
• Plastic Stand/Base
• Ethernet Cable (patch cable)

Interface Details

• Ports: Coaxial (Cable In), RJ‑45 Ethernet
• Form Factor: External Desktop Modem

Approximate Dimensions

• Height: 6.7″
• Depth: 1.6″
• Width: 4.9″

Material: Plastic
Finish: Black

Condition

Good Used Condition
Previously in service from February 2016 through December 2018. Fully functional when retired due to upgrade for voice service capability. Shows normal signs of use.
Exactly what is shown in the photos is included.

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Frequently Asked Questions

What does this modem do?
This device connects your home network to a cable internet provider, delivering broadband internet access over coaxial cable.

Is this an original OEM device?
Yes. This is a genuine Netgear component.

View other hardware on our
Netgear brand page.

Manufacturer reference:

Official Netgear Website

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