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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. 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!...Very fast, love netgear products, work the best, easy installation.

    Product Description

    A high-speed black cable modem with DOCSIS 3.1, Gigabit Ethernet, and broad ISP compatibility.
    See all Cable Modems
    Your price for this item is $199.99

  2. 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...Another selection of great choices that was offered from Best Buy....I've already found a coffee...

    Product Description

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

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

    SKU: J2VY7Y4J9P

    This is an amazing product, one of the Best Buy workers recommended this for me and they were right....Just love it. It has all the best bells and whistles for my home use....No problems with games or...

    Product Description

    A black DOCSIS 3.1 cable modem delivering multi-gigabit speeds, link aggregation, and broad provider compatibility.
    See all Cable Modems
    Your price for this item is $284.00
    Save $15
    The previous price was $299.99

  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 DOCSIS 3.1 cable modem delivering multi-gig internet speeds for seamless streaming and gaming.
    See all Cable Modems
    Your price for this item is $249.99

  5. NETGEAR - 32 x 8 DOCSIS 3.0 Cable Modem - Black

    SKU: J2VY7YW958

    Best of the best...Great modem...Modem works great with my new ORBI mesh network. I love the Netgear stuff. High performance.

    Product Description

    A high-speed black cable modem with DOCSIS 3.0, Gigabit Ethernet, and broad ISP compatibility for streaming.
    See all Cable Modems
    Your price for this item is $109.00

  6. NETGEAR - Nighthawk AX2700 Router with 32 x 8 DOCSIS 3.1 Cable Modem - Black

    SKU: J2VY7Y478H

    great...Fast love it so easy to set up would recommend to anyone 2850 sq ft home and no dead spots any place...we love it price and service at best buy is the best...Worked great one of the best routers...

    Product Description

    A black dual-band Wi-Fi 6 modem-router combo with DOCSIS 3.1, four LAN ports, and advanced security.
    See all Wi-Fi Routers
    Your price for this item is $279.99
    Save $100
    The previous price was $379.99

  7. ARRIS - Surfboard Wi-Fi 7 Router with DOCSIS 3.1 Cable Modem - Black

    SKU: J3R8WC876X

    This router came recommended from the staff at best buy and it has worked out great!...This the best of the best so happy with my purchase

    Product Description

    A black quad-band modem-router combo featuring Wi-Fi 7, DOCSIS 3.1, gigabit Ethernet, and advanced encryption.
    See all Wi-Fi Routers
    Your price for this item is $449.99
    Save $149
    The previous price was $599.00

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

    SKU: J2VY7YZPVL

    Great Cable Modem...Love It....Plenty of Bandwidth and it supports my landline so robocalls think they're connecting with someone (best...Great product and best place to purchase all of ds...One of the...

    Product Description

    A black DOCSIS 3.1 cable modem with dual voice ports delivers gigabit speeds and clear calls.
    See all Cable Modems
    Your price for this item is $297.99
    Save $52
    The previous price was $349.99

  9. ARRIS - SURFboard G20 DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router Combo - Black

    SKU: J3R8WC87RP

    I purchased this for myself and i love it...i purchased this cable modem so i don't have to pay to rent one from my cable company i love the size...and the blue light cause i love the color blue thank...

    Product Description

    A black DOCSIS 3.1 cable modem and Wi-Fi 6 router combo for fast, reliable home networking.
    See all Cable Modems
    Your price for this item is $186.99
    Save $62
    The previous price was $249.00

  10. NETGEAR - Cable Modem CM500 - DOCSIS 3.0, up to 400 Mbps

    SKU: J32XHYL8GY

    Product Description

    A reliable cable modem with DOCSIS 3.0 technology, supporting up to 400 Mbps for major US providers.
    See all Cable Modems
    Your price for this item is $75.99
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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.