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Comcast Modem

The modem is the first line of communication between your computer and network. The modem is responsible for receiving Internet data from and transmitting it to your computer. If you have a router, the modem also sends data to the router. Browse the top-ranked list of Comcast modems below along with associated reviews and opinions.  

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  1. Motorola - MB8600 32x8 DOCSIS 3.1 Cable Modem 1 GB Ethernet - Gray

    SKU: J3QXHQYY4Z

    Product Description

    A gray cable modem delivering ultra-fast DOCSIS 3.1 gigabit speeds with a 1 GB Ethernet port.
    See all Cable Modems
    Your price for this item is $299.99

  2. ARRIS - SURFboard SB8200 32 x 8 DOCSIS 3.1 Gig-Speed Cable Modem - White

    SKU: JX7YCY46XF

    Best of the best...Best modem Ive ever used. Handles 1 gig speeds with great results. Lasts for years. Love it....Works great just like the associate at Best Buy said it would....Love it!

    Product Description

    A white DOCSIS 3.1 cable modem delivering gigabit speeds, compatible with major cable internet providers.
    See all Cable Modems
    Your price for this item is $136.99
    Save $32
    The previous price was $169.00

  3. ARRIS - SURFboard SB6190 32 x 8 DOCSIS 3.0 Cable Modem - White

    SKU: JX7YCY49XC

    Thank you, it is great product. I love it. I love Best Buy!...Great amazing love it is the best very happy with it

    Product Description

    A white DOCSIS 3.0 cable modem with 32x8 channel bonding for fast, reliable home internet connectivity.
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    Your price for this item is $79.00

  4. NETGEAR - Nighthawk Mid/High-Split 32 x 8 DOCSIS 3.1 Cable Modem - Black

    SKU: J2VY7Y4CPL

    I like shopping at best buy...Works great I would recommend this modem to others!...Great Modem!...Best modem out there for speeds up to 1.5GB! Easy to install with easy instructions.

    Product Description

    A black cable modem with DOCSIS 3.1, 2Gbps download, 1Gbps upload, and dual Gigabit Ethernet ports.
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    Your price for this item is $249.99

  5. NETGEAR - Nighthawk 32 x 8 DOCSIS 3.1 Cable Modem - Black

    SKU: J2VY7YZ737

    Best Cable modem ever!...It supported by many cable providers and provides great download and upload speed with very little latency...and jitter. i love it!...Setup was painless and works great. Love...

    Product Description

    A black DOCSIS 3.1 cable modem offering Multi-Gig internet speeds with gigabit Ethernet and link aggregation.
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    Your price for this item is $199.00
    Save $50
    The previous price was $249.99

  6. Motorola - B12 32 x 8 DOCSIS 3.1 Cable Modem - Black

    SKU: J3R8W2ZJ8Z

    Product Description

    A high-performance black cable modem with DOCSIS 3.1 technology for ultra-fast, reliable internet connectivity.
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    Your price for this item is $134.95
    Save $10
    The previous price was $144.95

  7. NETGEAR - Nighthawk DOCSIS 3.1 Cable Modem - Black

    SKU: J2VY7YWCT4

    Love this modern, the best I've ever bought! Great value for the money spent!...Great camera and screen...Our granddaughter is doing to love it! Thanks Best Buy!

    Product Description

    A black DOCSIS 3.1 cable modem with Gigabit Ethernet, OFDM/OFDMA, and compatibility with major cable providers.
    See all Cable Modems
    Your price for this item is $199.99

  8. Motorola - MT7711 24x8 DOCSIS 3.0 Modem + AC1900 Router for Xfinity Internet & Voice - Black

    SKU: J3QXHQYP23

    Product Description

    A black modem-router combo with AC1900 WiFi, four Gigabit ports, and dual phone lines for Xfinity.
    See all Cable Modems
    Your price for this item is $299.00

  9. NETGEAR - Nighthawk Mid/High-Split DOCSIS 3.1 Cable Modem - Black

    SKU: J2VY7Y4J9P

    Works great together.Not have the best router and best modem....Love this modem and it increased our speed like crazy works great love it

    Product Description

    A black cable modem with DOCSIS 3.1, 2.5Gbps downloads, 1Gbps uploads, and flexible Ethernet connectivity.
    See all Cable Modems
    Your price for this item is $284.00
    Save $15
    The previous price was $299.99

  10. ARRIS - SURFboard DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router Combo - Black

    SKU: J3R8WC8738

    I got this from best buy ,great prices ,great sale love this store i get all my electronic from best...Best router price i could find for tbis router. A d it works great

    Product Description

    A black DOCSIS 3.1 modem and Wi-Fi 6 router combo with four Gigabit Ethernet ports.
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    Your price for this item is $199.99
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FAQ

When choosing a Comcast-compatible modem, consider features such as DOCSIS version (preferably DOCSIS 3.0 or 3.1 for faster speeds), the number of downstream and upstream channels, built-in Wi-Fi capabilities, and compatibility with your Comcast Internet plan.

To activate your Comcast modem, connect it to your cable outlet and power it on. Then, use a computer or mobile device to visit the Xfinity activation website or call Comcast customer support. Follow the on-screen instructions to complete the activation process.

Yes, Comcast Xfinity allows you to use your own compatible modem. Make sure to check Comcast’s official list of approved modems to ensure compatibility with your specific internet plan.

A modem connects your home to your Internet Service Provider (ISP) and provides internet access, while a router distributes that internet connection to multiple devices within your home, either wirelessly or through Ethernet cables. Some devices combine both functions in one unit.

Check the product specifications for Comcast Xfinity compatibility or refer to the official Comcast approved modem list. Compatibility information is usually provided in the modem’s description or on the manufacturer’s website.