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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 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 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 $299.99

  2. ARRIS - SURFboard S33 32 x 8 DOCSIS 3.1 Multi-Gig Cable Modem with 2.5 Gbps Ethernet Port - White

    SKU: JX7YCY444F

    Love everything...My new Modem is super great. Always my go to place....Best Buy!!...The best thing you find...Amazing speed, Easy installation, You love it. I strongly recommend you to check it.

    Product Description

    A high-speed white DOCSIS 3.1 cable modem with 2.5 Gbps Ethernet for seamless multi-gig connectivity.
    See all Cable Modems
    Your price for this item is $199.00

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

    SKU: J2VY7YW958

    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
    Save $51
    The previous price was $160.99

  4. 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 $329.99
    Save $50
    The previous price was $379.99

  5. 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

  6. 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 $49.99
    Save $5
    The previous price was $54.99

  7. NETGEAR - Nighthawk AX6000 Wi-Fi 6 Router with DOCIS 3.1 Cable Modem - Black

    SKU: J2VY7YZXRP

    Great Router...This router is the best of the best. Great purchase, I love it!...love it so much best box ever made to date fast fast

    Product Description

    A powerful black Wi-Fi 6 router and DOCSIS 3.1 modem combo for fast, reliable multi-device connectivity.
    See all Wi-Fi Routers
    Your price for this item is $499.99

  8. 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...I've already found a coffee grinder on line from Best Buy that I can't wait to purchase in my cart....Another...

    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

  9. 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

  10. 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
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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.