Does this modem have a power on/off switch?

There is not a power switch per say; in order to reboot the modem you just pull the power cord and plug it back in. I've had this unit for seven months now and it has worked flawlessly. I have only had to reboot it a handful of times.

Can landline phone work with this modem?

This is a cable modem that has to be hooked up to cable company. It doesn't have any phone jacks available on it. So the short answer is NO.

Will this work with Cox communications?

I used this modem with Time Warner cable. I do not know whether it will work with Cox Communications cable. The best place to direct your question is to Cox Communications.

Is this unit Charter Communications ready yet?

Just spoke with Charter Communications today. Tech support said the CM-400 is not on their 'Whitelist' and CC does not support IPv6 yet. Tech's response was 'it might work'. ccs

no, you have to use a wireless router for wifi.

Out of stock

This item is currently out of stock and it may or may not be restocked.

Out of Stock

Sold by Newegg

Shipped by Newegg

Add to Wish List

Main image of NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Alt view image 2 of 4 - NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Alt view image 3 of 4 - NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Alt view image 4 of 4 - NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Shop All Netgear Inc. Products

NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

(29) Write a Review

Cable Internet speeds up to 340 Mbps - 8 downstream &
4 upstream channels
Gigabit Ethernet port for faster access and downloads
ELIMINTE MONTHLY CABLE MODEM RENTAL FEES - Up to $156 per year
CableLabs DOCSIS 3.0 Certifed to work with cable Internet providers
XFINITY from Comcast, Spectrum, Cox , Cablevision and more
Ideal for streaming HD videos, faster downloads, and high-speed online gaming

Overview

Specs

Reviews (29)

See all Q & A

Any questions? Our AI mode will help you find out quickly.

Try me now

Easily connect to enjoy streaming high-definition videos, fast downloads and high-speed online gaming with this NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem hat delivers up to 340 Mbps download and upload speed to ensure rapid, efficient data transfer.

Model
Brand	NETGEAR
Model	CM400-100NAS

Details
Type	Cable Modem
Interface	Ethernet Port
Cable Interface	CATV-Coaxial connector, female
Standards	DOCSIS 3.0
Max Transmission Rate	up to 340 Mbps

Features
Features	Internet download speeds up to 343 Mbps and upload speeds up to 131 Mbps based on your cable Internet service Supports 8 downstream and 4 upstream channels providing efficient and reliable Internet access even during peak hours Eliminate monthly rental fees CableLabs DOCSIS 3.0 Certified to work with cable Internet providers like XFINITY, Time Warner Cable & Cablevision Not yet certified for Cox and Charter- in process and expected soon. Gigabit Ethernet port for faster access and downloads

Packaging
Package Contents	High Speed Cable Modem-DOCSIS 3.0 (CM400) Stand Ethernet cable Power adapter Quick install guide

Additional Information
First Listed on Newegg	November 21, 2014

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Limited Warranty period (parts): 1 year
Limited Warranty period (labor): 1 year
Read full details

Return Policies

Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by Newegg.com's 30-Day Return Policy.
Read full return policy for details.

NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Learn more about the Netgear Inc. CM400-100NAS

Customer Reviews of the Netgear Inc. CM400-100NAS

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info

Item#: 0SV-006H-00001

NETGEAR DOCSIS 3.0 CM400-100NAS High Speed Cable Modem - Black

Learn more about the Netgear Inc. CM400-100NAS

Customer Reviews of the Netgear Inc. CM400-100NAS

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Return Policies

Manufacturer Contact Info