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Best Buy customers often prefer the following products when searching for comcast compatible modem.

If you're a Comcast subscriber and you're looking to rent or buy a modem for your home network, the company has a list of approved modems that are compatible with its service. But what if you want to use your own modem instead? Browse the top-ranked list of Comcast-compatible modems below along with associated reviews and opinions.

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  1. Motorola - MB7621 24x8 DOCSIS 3.0 Cable Modem 1029 Mbps - Black - Front_Zoom
    Top comment

    "Great Comcast Modem...I would definitely recommend this modem for Comcast....Great Modem!...My fiancé and I moved to a house that had Comcast and Verizon available. After reading many reviews about Verizon not being compatible with most modems, we went with Comcast (Xfinity) and bought a Google Nest router and point system. "

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    Product Description

    The Motorola MB7420 high-speed 24x8 DOCSIS 3.0 cable modem supports speeds up to 1029 Mbps, twenty-four times faster than DOCSIS 2.0. A Full-Band Capture digital tuner ensures a faster, more reliable Internet. This attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. Connects to a computer, HDTV, game station, or wireless router. (This cable modem does not have a built-in wireless router or VoIP telephone adapter.)
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    Top comment

    "Great Comcast Modem...I would definitely recommend this modem for Comcast....Great Modem!...My fiancé and I moved to a house that had Comcast and Verizon available. After reading many reviews about Verizon not being compatible with most modems, we went with Comcast (Xfinity) and bought a Google Nest router and point system. "

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    Product Description

    The Motorola MB7420 high-speed 24x8 DOCSIS 3.0 cable modem supports speeds up to 1029 Mbps, twenty-four times faster than DOCSIS 2.0. A Full-Band Capture digital tuner ensures a faster, more reliable Internet. This attractive, compact design minimizes shelf space, improves cooling, and extends product life while looking great in any home or office. Connects to a computer, HDTV, game station, or wireless router. (This cable modem does not have a built-in wireless router or VoIP telephone adapter.)
    See all Cable Modems
    See all Cable Modems
  2. ARRIS - SURFboard DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router Combo - Black - Front_Zoom
    Top comment

    "ARRIS G34 DOCSIS Cable Modem...What should have been an easy setup was complicated by Comcast not getting their end of the connection set properly. ...Works and compatible with Xfinity...Works great and compatible with xfinity service. So far so good!"

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    Product Description

    Upgrade your home network with the ARRIS SURFboard G34. It's a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Wi-Fi 6 supports smooth 4K video streaming and low latency online gaming. This ARRIS SURFboard cable modem router features four 1-Gigabit Ethernet ports to connect your wired devices, and the compatible SURFboard Central mobile app allows for quick and secure setup. The G34 is best for gig-speed cable internet plans and compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others.
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    Top comment

    "ARRIS G34 DOCSIS Cable Modem...What should have been an easy setup was complicated by Comcast not getting their end of the connection set properly. ...Works and compatible with Xfinity...Works great and compatible with xfinity service. So far so good!"

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    Product Description

    Upgrade your home network with the ARRIS SURFboard G34. It's a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Wi-Fi 6 supports smooth 4K video streaming and low latency online gaming. This ARRIS SURFboard cable modem router features four 1-Gigabit Ethernet ports to connect your wired devices, and the compatible SURFboard Central mobile app allows for quick and secure setup. The G34 is best for gig-speed cable internet plans and compatible with major U.S. cable internet providers including Cox, Spectrum, Xfinity and others.
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    See all Cable Modems
  3. NETGEAR - Nighthawk DOCSIS 3.1 Cable Modem - Black - Front_Zoom
    Top comment

    "Easy to set up and configure. I love it. Comcast compatible...Comcast compatible...Had to upgrade to this because it was on the approved list of Comcast modems...so far so good ..haven't had any problems so far."

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    Product Description

    The CM1000 Ultra-High Speed Cable Modem, with speeds up to 1Gbps and DOCSIS 3.1 is 10X faster than DOCSIS 3.0 devices. It's backward compatible with DOCSIS 3.0 and ready for future service plan upgrades for XFINITY from Comcast, Cox, and Spectrum. A Gigabit Ethernet port provides faster access and downloads.
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    Top comment

    "Easy to set up and configure. I love it. Comcast compatible...Comcast compatible...Had to upgrade to this because it was on the approved list of Comcast modems...so far so good ..haven't had any problems so far."

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    Product Description

    The CM1000 Ultra-High Speed Cable Modem, with speeds up to 1Gbps and DOCSIS 3.1 is 10X faster than DOCSIS 3.0 devices. It's backward compatible with DOCSIS 3.0 and ready for future service plan upgrades for XFINITY from Comcast, Cox, and Spectrum. A Gigabit Ethernet port provides faster access and downloads.
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    See all Modems
  4. NETGEAR - 32 x 8 DOCSIS 3.0 Cable Modem - Black - Front_Zoom
    Top comment

    "My son bought this and it works great for his apartment. Comcast compatible. Easy set-up....Compatible and easy to set up...The modem is compatible with Comcast. It is easy to set up. "

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    Product Description

    The CM700 DOCSIS 3.0 High Speed Cable Modem, with speeds up to 1.4 Gbps and 32X faster than DOCSIS 2.0 devices, is ideal for streaming or gaming. It features a Gigabit Ethernet port and it's CableLabs DOCSIS 3.0 Certified to work with cable Internet XFINITY from Comcast, Spectrum, Cox and more.
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    Top comment

    "My son bought this and it works great for his apartment. Comcast compatible. Easy set-up....Compatible and easy to set up...The modem is compatible with Comcast. It is easy to set up. "

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    Product Description

    The CM700 DOCSIS 3.0 High Speed Cable Modem, with speeds up to 1.4 Gbps and 32X faster than DOCSIS 2.0 devices, is ideal for streaming or gaming. It features a Gigabit Ethernet port and it's CableLabs DOCSIS 3.0 Certified to work with cable Internet XFINITY from Comcast, Spectrum, Cox and more.
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    See all Modems
  5. Motorola - MB8600 32x8 DOCSIS 3.1 Cable Modem 1 GB Ethernet - Gray - Front_Zoom
    Top comment

    "Replace Comcasts...I bought to replace Comcast all in one router but it didn't down load any faster and i had to give up the telephone option with the Motorola, so i returned it and went back to Comcast GIG router and happy so far....Great router, Comcast compatible...This modem does exactly what it advertises. Easy set up and easy to hook up. "

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    Product Description

    The Motorola MB8600 Ultra-fast DOCSIS 3.1 cable modem supports true Gigabit speed with a 1 GB Ethernet port. Approved for Comcast Xfinity, Cox, and Charter Spectrum services, only. This cable modem is backward compatible with 32x8 DOCSIS 3.0.
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    Top comment

    "Replace Comcasts...I bought to replace Comcast all in one router but it didn't down load any faster and i had to give up the telephone option with the Motorola, so i returned it and went back to Comcast GIG router and happy so far....Great router, Comcast compatible...This modem does exactly what it advertises. Easy set up and easy to hook up. "

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    Product Description

    The Motorola MB8600 Ultra-fast DOCSIS 3.1 cable modem supports true Gigabit speed with a 1 GB Ethernet port. Approved for Comcast Xfinity, Cox, and Charter Spectrum services, only. This cable modem is backward compatible with 32x8 DOCSIS 3.0.
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    See all Modems
  6. Motorola - MG7700 24x8 DOCSIS 3.0 Cable Modem + AC1900 Router - Black - Left_Zoom
    Top comment

    "Modem/Router Combo...Bought my own Modem/Router to cut out the monthly Comcast charge. ...Save on the modem monthly charge. No issues with Comcast troubleshooting remotely."

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    Product Description

    The Motorola MG7700 24x8 DOCSIS 3.0 cable modem + AC1900 dual-band (2.4GHz and 5GHz) Wi-Fi Gigabit router with four Gigabit (GigE) Ethernet ports, power boost Wi-Fi amplifiers, firewall security, and more. Power Boost technology amplifies the wireless signal to the limit set by the Federal Communications Commission (FCC) to deliver higher WiFi speeds and extend the WiFi range. AnyBeam WiFi beamforming at 2.4 GHz and 5 GHz focuses the wireless signal on your wireless devices to further enhance wireless performance.
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    Top comment

    "Modem/Router Combo...Bought my own Modem/Router to cut out the monthly Comcast charge. ...Save on the modem monthly charge. No issues with Comcast troubleshooting remotely."

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    Product Description

    The Motorola MG7700 24x8 DOCSIS 3.0 cable modem + AC1900 dual-band (2.4GHz and 5GHz) Wi-Fi Gigabit router with four Gigabit (GigE) Ethernet ports, power boost Wi-Fi amplifiers, firewall security, and more. Power Boost technology amplifies the wireless signal to the limit set by the Federal Communications Commission (FCC) to deliver higher WiFi speeds and extend the WiFi range. AnyBeam WiFi beamforming at 2.4 GHz and 5 GHz focuses the wireless signal on your wireless devices to further enhance wireless performance.
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    See all Modem & Router Combos
  7. ARRIS - SURFboard DOCSIS 3.1 Multi-Gig Cable Modem & Wi-Fi 6 Router Combo - Black - Front_Zoom
    Top comment

    "COX compatible modem and router...excellent modem and router. easy to set up and compatible with COX...Great modem alternative...Awesome alternative to Comcast router, no monthly fees for equipment."

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    Product Description

    Multi-gigabit speeds for your home network. The SURFboard G36 is a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Stream 4K content smoothly, game without interruptions or slowdowns. It features a 2.5 Gbps Ethernt port for multi-gig networking PLUS four 1-Gigabit Ethernet ports to connect all your devices. The SURFboard G36 is compatible with major U.S. cable internet service providers and is best for speed plans up to 2.5 Gbps. The compatible SURFboard Central app simplifies setup and management of your network.
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    Top comment

    "COX compatible modem and router...excellent modem and router. easy to set up and compatible with COX...Great modem alternative...Awesome alternative to Comcast router, no monthly fees for equipment."

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    Product Description

    Multi-gigabit speeds for your home network. The SURFboard G36 is a DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo. Stream 4K content smoothly, game without interruptions or slowdowns. It features a 2.5 Gbps Ethernt port for multi-gig networking PLUS four 1-Gigabit Ethernet ports to connect all your devices. The SURFboard G36 is compatible with major U.S. cable internet service providers and is best for speed plans up to 2.5 Gbps. The compatible SURFboard Central app simplifies setup and management of your network.
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    See all Cable Modems
  8. ARRIS - SURFboard SB6183 16 x 4 DOCSIS 3.0 Cable Modem - White - Left_Zoom
    Top comment

    "Good modem for price...Comcast compatible modem that can save monthly rents...Comcast Modem...We needed an Comcast compatible unit when ours stopped working. "

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    Product Description

    The SURFboard SB8163 DOCSIS 3.0 Cable Modem features 16 downstream x 4 upstream channels for high-speed internet access. It is compatible with major US Cable Internet providers and is best for cable internet speed plans up to 400 Mbps.
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    Top comment

    "Good modem for price...Comcast compatible modem that can save monthly rents...Comcast Modem...We needed an Comcast compatible unit when ours stopped working. "

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    Product Description

    The SURFboard SB8163 DOCSIS 3.0 Cable Modem features 16 downstream x 4 upstream channels for high-speed internet access. It is compatible with major US Cable Internet providers and is best for cable internet speed plans up to 400 Mbps.
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    See all Modems
  9. ARRIS - SURFboard DOCSIS 3.1 Cable Modem for Xfinity Internet & Voice - Black - Front_Zoom
    Top comment

    "Compatible Cable Modem to avoid cable fees....Standard cable modem. Nothing fancy about it. Does the job. Saves having to pay Comcast their $15 monthly fee. ...Comcast Gigabit Triple Play Compatible Modem...It's fine, it works, but it definitely took several calls to comcast to get it fully functional. Doesn't quite seem as nice as the netgear offering, but it certanly works well."

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    Product Description

    Get a perfect compliment to your Wi-Fi router with this Arris SURFboard T25 cable modem. Two Gigabit Ethernet ports allow for fast connection speeds to Wi-Fi routers or other wired devices, and dual telephony ports provide convenient digital voice support. This Arris SURFboard T25 cable modem can bond to two upstream and two downstream DOCSIS 3.1 channels to help achieve true gigabit download speeds.
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    Top comment

    "Compatible Cable Modem to avoid cable fees....Standard cable modem. Nothing fancy about it. Does the job. Saves having to pay Comcast their $15 monthly fee. ...Comcast Gigabit Triple Play Compatible Modem...It's fine, it works, but it definitely took several calls to comcast to get it fully functional. Doesn't quite seem as nice as the netgear offering, but it certanly works well."

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    Product Description

    Get a perfect compliment to your Wi-Fi router with this Arris SURFboard T25 cable modem. Two Gigabit Ethernet ports allow for fast connection speeds to Wi-Fi routers or other wired devices, and dual telephony ports provide convenient digital voice support. This Arris SURFboard T25 cable modem can bond to two upstream and two downstream DOCSIS 3.1 channels to help achieve true gigabit download speeds.
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    See all Cable Modems
  10. ARRIS - SURFboard DOCSIS 3.0 Cable Modem & AC2350 Wi-Fi Router Combo - Black - Front_Zoom
    Top comment

    "Modem router...Works perfectly. Replaces rented Comcast modem and router. Reduces Comcast bill....Excellent modem , works with xfinity Comcast, fast"

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    Product Description

    The SURFboard SBG7600AC2 is a DOCSIS 3.0 Cable Modem with a built-in AC2350 Wi-Fi Router. The SBG7600AC2 is equipped with four 1-Gigabit Ethernet ports and provides Wi-Fi speeds up to 2350 Mbps. It is compatible with major US Cable Internet providers including Cox, Spectrum, Xfinity and others. It's best for cable internet speed plans up to 800 Mbps. Setup is quick and easy with the SURFboard Central app.
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    Top comment

    "Modem router...Works perfectly. Replaces rented Comcast modem and router. Reduces Comcast bill....Excellent modem , works with xfinity Comcast, fast"

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    Product Description

    The SURFboard SBG7600AC2 is a DOCSIS 3.0 Cable Modem with a built-in AC2350 Wi-Fi Router. The SBG7600AC2 is equipped with four 1-Gigabit Ethernet ports and provides Wi-Fi speeds up to 2350 Mbps. It is compatible with major US Cable Internet providers including Cox, Spectrum, Xfinity and others. It's best for cable internet speed plans up to 800 Mbps. Setup is quick and easy with the SURFboard Central app.
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    See all Modem & Router Combos
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