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Labor Day Appliances SaleEnds 9/16. Limited quantities. No rainchecks.Shop now

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Best Buy

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wi-fi & networking

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modems

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cable modems

Xfinity Cable Modem

Upgrade your home internet experience with a reliable and high-performing cable modem. Whether you're streaming your favorite shows, gaming online, or working from home, a top-notch cable modem is essential for a seamless and fast internet connection. Say goodbye to buffering and slow download speeds, and say hello to uninterrupted browsing and lightning-fast downloads. With a wide range of options available, finding the perfect cable modem to suit your needs has never been easier. Explore our selection today and take your internet connectivity to the next level.

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

    SKU: JX7YCY444F

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

    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

  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 Modem & Router Combos
    Your price for this item is $186.99
    Save $13
    The previous price was $199.99

  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.
    See all Cable Modems
    Your price for this item is $79.00

  4. 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....Best deal in town! I love Best Buy and the products they carry!

    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 $169.00

  5. 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

  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.
    See all Cable Modems
    Your price for this item is $134.95
    Save $14
    The previous price was $149.00

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

    SKU: J2VY7YZXRP

    Best Modem Combo...Love this modem combo.. I finally have the speeds that I'm paying for!! Great Job Everyone!!!! Kerry...I love this product, best buy I ever made. Strongly recomended

    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. 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. NETGEAR - Nighthawk AC1900 Router with DOCSIS 3.0 Cable Modem - Black

    SKU: J2VY7YTZHG

    Great product!!!...This was a great purchase and I love that Best Buy carries top-notch items at the very best prices !!...Fast, great range, and best buy. Dual band is a lifesaver. Love it.

    Product Description

    A dual-band black modem-router combo offering up to 1.9Gbps WiFi speeds and DOCSIS 3.0 support.
    See all Wi-Fi Routers
    Your price for this item is $192.99

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

    SKU: J2VY7YW958

    best replacement for worn out cm500. Have used Netgear for many years....Great device, easy set up...My internet providers “best” modem at top performance produced only 215mbps sporadically.

    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

  11. Motorola - Dual-Band AC1900 Router with 16 x 4 DOCSIS 3.0 Cable Modem - Black

    SKU: J3QXHQYYTG

    Great Router...Works great....Great buy.

    Product Description

    A dual-band black modem-router combo with Wi-Fi 5, Power Boost, and parental controls for secure streaming.
    See all Wi-Fi Routers
    Your price for this item is $138.99

  12. 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 $299.99
    Save $80
    The previous price was $379.99

  13. 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

  14. 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

  15. 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

  16. 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
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16 items

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FAQ

When choosing an Xfinity cable modem, look for features such as DOCSIS compatibility (preferably DOCSIS 3.0 or 3.1), high download/upload speeds, multiple Ethernet ports, and compatibility with your Xfinity internet plan. Some modems also include built-in Wi-Fi routers for added convenience.

No, not all cable modems are compatible with Xfinity. It's important to choose a modem that is on Xfinity's list of approved devices to ensure seamless activation and optimal performance.

To activate your Xfinity cable modem, connect it to your coaxial cable and power source, then follow the on-screen instructions at xfinity.com/activate or use the Xfinity mobile app. You may need your Xfinity account information during the process.

Some Xfinity cable modems support voice services (telephone), but not all do. If you need phone service, look for modems labeled as 'voice modems' or 'telephony modems' that are compatible with Xfinity Voice.

Using your own Xfinity cable modem can help you avoid monthly rental fees, potentially offer faster speeds, and give you more control over your home network settings. It also allows you to choose a device that best fits your needs and preferences.