NETGEAR - 8 x 4 DOCSIS 3.0 Cable Modem - Black

The NETGEAR CM400 High Speed Cable Modem provides a connection to high-speed cable Internet, up to 340 Mbps. With DOCSIS 3.0 it is 8X faster than 2.0. It is CableLabs DOCSIS 3.0 Certified to work with cable Internet providers XFINITY from Comcast, Spectrum, Cox, Cablevision and more.

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$56.99
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Overview

What's Included


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

Ratings & Reviews


Overall Customer Rating:
94% of customers would recommend this product to a friend (1642 out of 1749)

Features


Compatibility

Compatible with cable Internet Providers like XFINITY from Comcast, Spectrum, Cox, Cablevision & more. Call your internet service provider for additional compatibility information.

Gigabit Ethernet Port

DOCSIS 3.0 Cable Modem with 1 Gigabit Ethernet port. Fastest wired speeds to connect your router or computer.

Save on Fees

Eliminate monthly cable modem rental fees - up to $120 per year.

Higher Speeds

Up to 340 Mbps download and upload speed for streaming HD videos, faster downloads, and high-speed online gaming.

Improved WiFi Connection

Boosts speed, reliability, & range of WiFi connections.

Reliability

8 downstream and 4 upstream channel bonding offers the fastest possible cable Internet speeds during peak hours.

DOCSIS 3.0

DOCSIS 3.0 up to 8x faster download speeds than DOCSIS 2.0.

External Router Needed

This devices requires an external router for WiFi capabilities. Recommended to pair with NETGEAR WiFi router.


Overall customer rating

Rating: 4.5 out of 5 stars with 1749 reviews

94%of customers would recommend this to a friend

Pros

Cons

Most helpful reviews

See all customer reviews
  • Rating: 5 out of 5 stars

    Perfect

    Posted
    baliscott
    • Verified Purchaser
    • My Best Buy® Member

    After reading several online reviews, I decided to go with the Netgear. Happily, everything was just as promised and I was able to avoid giving Comcast any more of my money than I absolutely have to!

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Product is not good

    Posted
    Ashok

    I bought Netgear CM400 model on Thanksgiving day and installed on 12/01 it did not work. Continuous trouble shooting with Netgear 1st level support, 2nd level and supervisor, there is defect with this product alone, so I have returned the product and took a new one of the same model and installed on 12/04 it worked for 10 days then it started the issue. After call with the Netgear 1st level support, 2nd level and supervisor came to know that there is defect in hardware for the model itself which they have fixed and available only in their warehouse, and not have been distributed to the retail units. If the product is bought across any retail units still it may have issues.

    No, I would not recommend this to a friend

  • Rating: 1 out of 5 stars

    2 bad right out of box but Best Buy stood TALL

    Posted
    liquorauthority
    • Verified Purchaser
    • My Best Buy® Member

    Good news.... Best Buy was right there for me every step of the way.Best Buy made 2 exchanges bing bang boom. They ended up providing me with a Motorola modem. Problem solved. I give Best Buy 100 Stars for their customer service. I could not ask them for anything more. One very happy customer

    No, I would not recommend this to a friend

  • Rating: 4 out of 5 stars

    Way faster than I anticipated.

    Posted
    mslade
    • Verified Purchaser
    • My Best Buy® Elite Member

    I wasn't sure how much of a difference it was going to make versus my cable provider modem. To my surprise a lot. I never have to reset it. It never freezes up and never buffers. I hoped it was going to do better than the old one and it really has made a difference!

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Not compatible with Time Warner

    Posted
    MarcInMaine
    • My Best Buy® Member

    After buying this modem our internet connection stopped working. I contacted Time Warner, thinking it was their issue. They insisted it was probably a bad modem. I returned it and bought another of the same modem. Same issue. Time Warner came, checked all of the connections and even checked the connection on the pole at the street. The also confirmed that this was the right modem for our internet connection. The TWC tech said he had encountered issues with this very modem three times in the previous two weeks. I returned this and purchased another brand's modem instead, and we haven't had any issues with that modem. So, despite the box saying this modem is Time Warner compatible, it is not.

    No, I would not recommend this to a friend

  • Rating: 3 out of 5 stars

    Easy set up

    Posted
    kruss1970
    • Verified Purchaser
    • My Best Buy® Member

    Modem easy to set up. However, had some intermintent connection problems. The Netgear customer service was terrible.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    Perfect modem to upgrade to

    Posted
    glove234
    • Verified Purchaser
    • My Best Buy® Member

    I tried using the white Surfboard SB6141 and it did not work at all with Cox Cable. Customer support told me that a tech needed to come out. He was unable to do anything and recommended that i try this netgear modem because he's seen too many problems with the SB6141. This netgear modem was super easy to setup with zero problems getting it registered with Cox and I have tested speeds more than double the download and upload speeds of my old DOCSIS 2.0 modem.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great for conection

    Posted
    Jumpupanddown
    • Verified Purchaser
    • My Best Buy® Member

    No problems so far all I did was plug it in and I was back on the net like nothing ever happen

    I would recommend this to a friend




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