---
product_id: 324700801
title: "NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS)"
brand: "netgear"
price: "917 kr"
currency: DKK
in_stock: true
reviews_count: 5
category: "Netgear"
url: https://www.desertcart.dk/products/324700801-netgear-cable-modem-cm400-compatible-with-cable-providers-xfinity-by
store_origin: DK
region: Denmark
---

# Up to 340 Mbps blazing speed DOCSIS 3.0 with 8x4 channel bonding Gigabit Ethernet port with auto-sensing NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS)

**Brand:** netgear
**Price:** 917 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock lightning-fast internet without the rental fees!

## Quick Answers

- **What is this?** NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS) by netgear
- **How much does it cost?** 917 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/324700801-netgear-cable-modem-cm400-compatible-with-cable-providers-xfinity-by)

## Best For

- netgear enthusiasts

## Why This Product

- Trusted netgear brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cut the Rental Cord ⚡:** Save up to $156/year by owning your modem, not renting.
- • **Blazing Fast Speeds 🔥:** Experience up to 340 Mbps download and 123 Mbps upload for seamless HD streaming and gaming.
- • **Certified Compatibility 📶:** Works flawlessly with top US cable providers like Xfinity, Spectrum, and Cox.
- • **Future-Proof Connectivity 🔗:** Gigabit Ethernet port with auto-sensing ensures ultra-reliable wired connections.
- • **Plug & Play Simplicity 🛠️:** Effortless setup means you’re online in minutes—no tech headaches.

## Overview

The NETGEAR CM400 is a DOCSIS 3.0 certified cable modem delivering up to 340 Mbps download speeds via an 8x4 channel bonding setup. Featuring a single Gigabit Ethernet port with auto-sensing technology, it supports major US cable providers including Xfinity, Spectrum, and Cox. Ideal for HD streaming, gaming, and fast downloads, it eliminates monthly rental fees and offers easy plug-and-play installation for a professional-grade home internet upgrade.

## Description

The NETGEAR CM400 High Speed Cable Modem provides a connection to high-speed cable Internet, up to 340Mbps. It is Cable Labs certified and with DOCSIS 3. 0 is 8X faster than 2. 0. It is compatible with U. S. cable Internet providers like Cablevision, Cox, Time Warner Cable, XFINITY & more.

Review: Setup was super easy. Modem and router have been working flawlessy - Setup was super easy. Modem and router have been working flawlessy. I would recommend this to anyone looking for a modem/router combo
Review: Great product, but not for EU use unfortunatelly - The device is missing the EURO-DOCSIS connection. Can be used only in USA. The customer support was kind and responsive. They refunded me in no time!

## Features

- ELIMINATE MONTHLY CABLE MODEM RENTAL FEES - Up to $156 per year
- DOCSIS 3. 0 Cable Modem with 1 Gigabit Ethernet port. One (1) Gigabit Ethernet port with auto-sensing technology
- Up to 340Mbps download and upload speed. Separate router required for WiFi. 8x4 channel bonding.
- DOCSIS 3. 0 unleashes 8x faster download speeds than DOCSIS 2. 0
- Ideal for streaming HD videos, faster downloads, and high-speed online gaming
- Required for the fastest cable Internet speed tiers
- Compatible with Xfinity from Comcast, Spectrum, Cox, & more. Not compatible with bundled voice services.
- Memory storage capacity: 64.0 MB

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MN2EUEA |
| Antenna Location | Home |
| Antenna Type | Fixed |
| Brand | NETGEAR |
| Built-In Media | Computer Modems |
| Color | Black |
| Compatible Devices | Router |
| Compatible devices | Router |
| Connectivity Technology | Ethernet |
| Control Method | App |
| Customer Reviews | 4.1 out of 5 stars 4,989 Reviews |
| Data Transfer Rate | 340 Megabits Per Second |
| Frequency Band Class | Single-Band |
| Frequency band class | Single-Band |
| Global Trade Identification Number | 10606449103707 |
| Has Internet Connectivity | Yes |
| Is Modem Compatible | Yes |
| Item Weight | 1.08 Pounds |
| LAN Port Bandwidth | 1000 Mbps |
| Manufacturer | Netgear |
| Maximum Upstream Data Transfer Rate | 123 Megabits Per Second |
| Model Name | CM400 |
| Model Number | CM400-100NAS |
| Model name | CM400 |
| Number of Ports | 3 |
| Operating System | Microsoft Windows 7, 8, Vista, XP, 2000, Mac OS, or other operating systems running a TCP/IP network |
| Other Special Features of the Product | DOCSIS 3.0, Gigabit Ethernet Port |
| RAM Memory Installed | 64 MB |
| Router Network Type | Wired |
| Special features | DOCSIS 3.0, Gigabit Ethernet Port |
| UPC | 606449103700 |
| Wireless Compability | 802.11bgn |
| Wireless communication standard | 802.11bgn |

## Product Details

- **Brand:** NETGEAR
- **Model name:** CM400
- **Special features:** DOCSIS 3.0, Gigabit Ethernet Port
- **Frequency band class:** Single-Band
- **Wireless communication standard:** 802.11bgn

## Images

![NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS) - Image 1](https://m.media-amazon.com/images/I/71+uQDKIAxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Setup was super easy. Modem and router have been working flawlessy
*by B***N on 19 April 2016*

Setup was super easy. Modem and router have been working flawlessy. I would recommend this to anyone looking for a modem/router combo

### ⭐⭐⭐⭐⭐ Great product, but not for EU use unfortunatelly
*by Z***U on 1 October 2021*

The device is missing the EURO-DOCSIS connection. Can be used only in USA. The customer support was kind and responsive. They refunded me in no time!

### ⭐⭐⭐⭐⭐ Netgear D6200 Modem Router
*by L***G on 5 May 2013*

I have Windstream DSL and have been having trouble staying connected with the modem they supplied. I have also started to have some issues with my old Netgear router [WNDR3300] as it was lacking in range. Most everything in the house has been converted to Apple products, and the traffic is getting pretty heavy. 5 I phones, 1 I pad, Mac Book Pro, I Mac 27". Apple TV, HP 8500 premium printer and 2 windows lap tops. So we are pretty heavy users at different times of the day. My windstream modem a speedstreem 4200 had to be reset a couple time a day, and after contacting Windstream to no avail, I decided to replace the modem. After finding the Netgear D6200 Modem Router combo on CNET with a good review, I decided that I would give it a try. I am by no means a computer guru, but I know enough to get by. I have had it up and running for a week now, and I have not had any issues with the system. No resets or failure to connect to the network. The setup was very simple and I renamed my network to match the old setup, it took me about 30 minutes including a firmware update. The coverage has increased in the home, as I had some dead spots with the old router. I do not have any products that are above the N range at this time so I have no info on the new AC wifi, but it's there when I do. Over all I have been very happy with the results I have been seeing. Nothing worse than having to get up and reset the system every few hours, it's much like every time you go to turn the lighs on having to go to the circuit box the flip the braker. All in all I would recommend the D6200 at this time. UPDATE 6/13 Just to let everyone know, I have had the router up and running for 3 months now and last week I lost service no internet connection. Not bad considering what I had been going thru with my old system, did a reset and still no internet, contacted ISP and they had an outage in the area. So I really have been up and running for 3 months without a drop in service.

## Frequently Bought Together

- NETGEAR Cable Modem CM400 Compatible with Cable Providers Xfinity by Comcast, Spectrum, Cox | For Cable Plans Up to 100 Mbps | DOCSIS3.0, Black (CM400-100NAS)
- NETGEAR 4-Stream WiFi 6 Router (R6700AX) – Security Features, AX1800 Wireless Speed (Up to 1.8 Gbps), Covers up to 1,500 sq. ft., 20 devices
- NETGEAR Nighthawk Dual-Band WiFi 7 Router (RS90) – Security Features, BE3600 Wireless Speed (up to 3.6 Gbps) - Covers up to 2,000 sq. ft., 50 Devices – 2.5 Gig Internet Port

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-25*