NETGEAR CM400 (8x4) Cable Modem, DOCSIS 3.0 | Certified for XFINITY by Comcast, Spectrum, Cox, Cablevision & more (CM400-100NAS)

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NETGEAR CM400 (8x4) Cable Modem, DOCSIS 3.0 | Certified for XFINITY by Comcast, Spectrum, Cox, Cablevision & more (CM400-100NAS)
NETGEAR CM400 (8x4) Cable Modem, DOCSIS 3.0 | Certified for XFINITY by Comcast, Spectrum, Cox, Cablevision & more (CM400-100NAS)
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NETGEAR

NETGEAR CM400 (8x4) Cable Modem, DOCSIS 3.0 | Certified for XFINITY by Comcast, Spectrum, Cox, Cablevision & more (CM400-100NAS)

4.5 stars out of 150 reviews
(4.5)|
150 ratings
Rating Pending

Key item features

  • Internet Speed: Supports cable internet service plans up to 100 Mbps, with a maximum connection speed of 340 Mbps.
  • Modem Technology: Features DOCSIS 3.0 cable modem technology, offering download speeds up to 8 times faster than DOCSIS 2.0.
  • Connectivity Port: Equipped with one Gigabit Ethernet port for reliable wired connections.
  • Rental Fee Elimination: Helps eliminate monthly cable modem rental fees, potentially saving up to $120 annually.
  • Broad Compatibility: Certified for XFINITY by Comcast, Spectrum, Cox, Cablevision, and CableONE.
  • System Requirements: Compatible with Microsoft Windows (7, 8, Vista, XP, 2000), Mac OS, and other TCP/IP network operating systems.
  • Service Exclusions: Not compatible with Verizon, AT&T, CenturyLink, or bundled voice services.
  • WiFi Requirement: Requires a separate router for WiFi functionality, as it does not include integrated wireless capabilities.
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Customer ratings & reviews

4.5 out of 5 stars
stars150 ratings129 reviews
How item rating is calculated
  1. 5 stars78% (117)
  2. 4 stars11% (16)
  3. 3 stars5% (7)
  4. 2 stars0% (0)
  5. 1 star7% (10)

Reviews summary

Pros
  • : Offers good value for its features and performance.
  • : Simple installation process with clear instructions.
  • : Consistently performs without issues.
  • : Provides up to 236 mbps download speeds.
Neutral
  • : Can be fast and steady, but may vary or drop occasionally.
  • : Can be fast and reliable, but may be prone to reboots and connectivity issues.
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Showing 1-3 of 129 reviews

Jun 6, 2016
Ann
5 out of 5 stars review

Verified Purchase

Great Buy!!!

The Netgear DOCSIS 3.0 was very easy to install. I called my internet Provider (TWC) and the agent activated the modem, it worked without any problems. I haven't had any problems with it at all thus far. I am very happy with this purchase. I also have owned the Netgear Router for many years and have had no problems with it either.

Helpful?1A0HCHA7Y41E40099972
Apr 6, 2016
BrendaLea
Walmart Associate
5 out of 5 stars review

Great

We moved and had to get a new internet company. We now have Comcast and they said we needed to either rent from them for $10 a month ($120) a year or we could purchase our own..for $100 or so..well, I went on walmart.com and found this one with great reviews...bought it and had it delivered to our store and it was there in just a few days. We hooked it up and then hooked up our wireless router and wallaaa...we have internet. Awesome! Would highly recommend this!!

Helpful?1A0HCHA7Y41E40099972
Dec 16, 2016
SSEinTX
5 out of 5 stars review

Verified Purchase

Works great

I got this modem as I was switching ISP and would be getting a discount with having my own modem. It is doing great pulling in over 200MB down stream and matches perfectly to my ASUS (RT-AC68U) router. I've had Motorola in the past and this is every bit as good. Go for it, get it!

Helpful?1A0HCHA7Y41E40099972