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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 - MB8611 32x8 DOCSIS 3.1 Cable Modem 2.5 GB Ethernet - Black - Front_Zoom
    Top comment

    "Great for Comcast...It works! Needed a Comcast compatible modem and it delivered...Update my modem...I bought this modem because my old one was outdated and not compatible with my comcast service. "

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    Product Description

    The Motorola MB8611 Ultra-fast DOCSIS 3.1 cable modem supports true Gigabit speed tiers with a 2.5 GB Ethernet port. Approved for Comcast Xfinity, Cox, and Charter Spectrum services only. This cable modem is backwards compatible with 32x8 DOCSIS 3.0.
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    Top comment

    "Great for Comcast...It works! Needed a Comcast compatible modem and it delivered...Update my modem...I bought this modem because my old one was outdated and not compatible with my comcast service. "

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    Product Description

    The Motorola MB8611 Ultra-fast DOCSIS 3.1 cable modem supports true Gigabit speed tiers with a 2.5 GB Ethernet port. Approved for Comcast Xfinity, Cox, and Charter Spectrum services only. This cable modem is backwards compatible with 32x8 DOCSIS 3.0.
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    Your price for this item is $189.99
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  2. 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.)
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    Your price for this item is $89.99
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  3. 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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    Your price for this item is $213.99
    The previous price was $299.00
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  4. Motorola - MG8725 32x8 DOCSIS 3.1 Modem + AX6000 router - Black - Front_Zoom
    Top comment

    "Updated my Comcast internet to a faster speed but old modem was not compatible anymore. ...Never got to use it, was not compatible with WoW out of the box. When the modem takes the signal from ISP, it isn't configured correctly and it shuts off the DHCP server not allowing you to connect to the modem with any devices. "

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    Product Description

    The ultra-fast MG8725 DOCSIS 3.1 Cable Modem with Built-in AX Router is the first CableLabs certified device supporting new low-latency features, making it perfect for precision gaming, streaming, conferencing and more.
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    Top comment

    "Updated my Comcast internet to a faster speed but old modem was not compatible anymore. ...Never got to use it, was not compatible with WoW out of the box. When the modem takes the signal from ISP, it isn't configured correctly and it shuts off the DHCP server not allowing you to connect to the modem with any devices. "

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    Product Description

    The ultra-fast MG8725 DOCSIS 3.1 Cable Modem with Built-in AX Router is the first CableLabs certified device supporting new low-latency features, making it perfect for precision gaming, streaming, conferencing and more.
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    Your price for this item is $399.99
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  5. Motorola - MT7711 24x8 DOCSIS 3.0 Modem + AC1900 Router for Xfinity Internet & Voice - Black - Front_Zoom
    Top comment

    "Not Compatible...I bought this to use with my home wi-fi network, but ended up not being able to use it. Even though it says Comcast compatible on the box the Comcast agent said it couldn't be used....., Mormon approved, approved by Hashem, Comcast compatible,"

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    Product Description

    The Motorola MT7711 combines an ultra-fast DOCSIS 3.0 cable modem + AC1900 WiFi router + 2 phones lines for use with Xfinity Voice service only. Certified for Comcast Xfinity Internet and Voice service and recommended for cable internet plans with speeds up to 600 Mbps. Features 4 Gigabit Ethernet ports for wired connections. Delivers up to 1900 Mbps wireless speed. Power Boost, Range Boost, and AnyBeam WiFi beamforming enable quality streaming, gaming, and connecting throughout the home. Enjoy crystal-clear calling and enhanced features like caller ID, call forwarding, conference calling, and more. Save up to $168 per year on cable modem rental fees (savings described is for Comcast Xfinity service). Comes with a 2-year warranty and free support from our USA team of connectivity technicians. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non-Xfinity voice services.
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    Top comment

    "Not Compatible...I bought this to use with my home wi-fi network, but ended up not being able to use it. Even though it says Comcast compatible on the box the Comcast agent said it couldn't be used....., Mormon approved, approved by Hashem, Comcast compatible,"

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    Product Description

    The Motorola MT7711 combines an ultra-fast DOCSIS 3.0 cable modem + AC1900 WiFi router + 2 phones lines for use with Xfinity Voice service only. Certified for Comcast Xfinity Internet and Voice service and recommended for cable internet plans with speeds up to 600 Mbps. Features 4 Gigabit Ethernet ports for wired connections. Delivers up to 1900 Mbps wireless speed. Power Boost, Range Boost, and AnyBeam WiFi beamforming enable quality streaming, gaming, and connecting throughout the home. Enjoy crystal-clear calling and enhanced features like caller ID, call forwarding, conference calling, and more. Save up to $168 per year on cable modem rental fees (savings described is for Comcast Xfinity service). Comes with a 2-year warranty and free support from our USA team of connectivity technicians. NOT compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH and non-Xfinity voice services.
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    Your price for this item is $199.99
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  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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    Your price for this item is $174.99
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  7. Motorola - MT8733 32x8 DOCSIS 3.1 Modem + AX6000 Router with Voice for Xfinity - Black - Front_Zoom
    Top comment

    "The unit's two Comcast compatible telephone outlets are useful and the ability to manage this modem/router via the moto sync app is a nice bonus. ...motorola modem...very good speed for this modem, the only modem that comcast recommends for my area with a phone hookup."

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    Product Description

    When you’re ready to level up – the MT8733 DOCSIS 3.1 Cable Modem with Built-In AX Router and 2 Phone Lines is a first-of-its-kind voice-enabled modem/router with two phone lines for reliable communication. Supports the fastest internet with DOCSIS 3.1 for download speeds ten times faster than the previous DOCSIS standard.
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    Top comment

    "The unit's two Comcast compatible telephone outlets are useful and the ability to manage this modem/router via the moto sync app is a nice bonus. ...motorola modem...very good speed for this modem, the only modem that comcast recommends for my area with a phone hookup."

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    Product Description

    When you’re ready to level up – the MT8733 DOCSIS 3.1 Cable Modem with Built-In AX Router and 2 Phone Lines is a first-of-its-kind voice-enabled modem/router with two phone lines for reliable communication. Supports the fastest internet with DOCSIS 3.1 for download speeds ten times faster than the previous DOCSIS standard.
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    Your price for this item is $379.99
    The previous price was $409.99
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  8. NETGEAR - Dual-Band AC1600 Router with 16 x 4 DOCSIS 3.0 Cable Modem - Black - Front_Zoom
    Top comment

    "Good modem/router...Bought this to replace an Arris. Compatible with Comcast/xfinity....It had to be compatible with Comcast. One call to Comcast and the modem was running smoothly and no problems for the last two weeks."

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    Product Description

    The NETGEARDual-Band AC1600 Router with 16 x 4 DOCSIS 3.0 Cable Modem provides the fastest cable speed available with an AC1600 WiFi router and integrated DOCSIS 3.0 cable modem, with up to 680 Mbps. It's compatible with cable internet provider Comcast XFINITY, Spectrum, Cox, Cablevision, and more.
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    Top comment

    "Good modem/router...Bought this to replace an Arris. Compatible with Comcast/xfinity....It had to be compatible with Comcast. One call to Comcast and the modem was running smoothly and no problems for the last two weeks."

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    Product Description

    The NETGEARDual-Band AC1600 Router with 16 x 4 DOCSIS 3.0 Cable Modem provides the fastest cable speed available with an AC1600 WiFi router and integrated DOCSIS 3.0 cable modem, with up to 680 Mbps. It's compatible with cable internet provider Comcast XFINITY, Spectrum, Cox, Cablevision, and more.
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    Your price for this item is $90.99
    Clearance
    The regular price is $179.99
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  9. NETGEAR - Dual-Band AC1750 Router with 16 x 4 DOCSIS 3.0 Cable Modem - Black - Angle_Zoom
    Top comment

    "Comcast compatible so no grief from them with the purchase or setup. ...Setup/Install Issues with Comcast...I read many reviews and I really liked the look and design of this unit however when I was getting my Comcast/Xfinity cable setup the technician and Comcast support both said this wasn't supported by Xfinity even though it clearly says Comcast compatible on the box. "

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    Product Description

    The NETGEAR Dual-Band AC1750 Router with 16 x 4 DOCSIS 3.0 Cable Modem provides very fast cable speeds with an AC1750 WiFi router and integrated DOCSIS 3.0 cable modem, up to 680 Mbps. Compatible with cable Internet providers such as XFINITY from Comcast, Spectrum, Cox, Cablevision, and more.
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    Top comment

    "Comcast compatible so no grief from them with the purchase or setup. ...Setup/Install Issues with Comcast...I read many reviews and I really liked the look and design of this unit however when I was getting my Comcast/Xfinity cable setup the technician and Comcast support both said this wasn't supported by Xfinity even though it clearly says Comcast compatible on the box. "

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    Product Description

    The NETGEAR Dual-Band AC1750 Router with 16 x 4 DOCSIS 3.0 Cable Modem provides very fast cable speeds with an AC1750 WiFi router and integrated DOCSIS 3.0 cable modem, up to 680 Mbps. Compatible with cable Internet providers such as XFINITY from Comcast, Spectrum, Cox, Cablevision, and more.
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    Your price for this item is $169.99
    Clearance
    The regular price is $199.99
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  10. 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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    Your price for this item is $160.99
    The previous price was $229.99
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