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Best Buy customers often prefer the following products when searching for 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. ARRIS - SURFboard DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router Combo - Black - Front_Zoom
    Top comment

    "This modem is great with wifi and provides closer speeds to what i pay for compared to comcast moden was rented for 8 years at 16 bucks a month so its well worth it to own ypur own. ...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. "

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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

    "This modem is great with wifi and provides closer speeds to what i pay for compared to comcast moden was rented for 8 years at 16 bucks a month so its well worth it to own ypur own. ...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. "

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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 Modem & Router Combos
  2. NETGEAR - Nighthawk Mid-High Split DOCSIS 3.1 Cable Modem - Black - Left_Zoom
    Top comment

    "The CM300 works great with Comcast/Xfinity...The CM3000 works great with Comcast/Xfinity. However, I had to call Xfinity support to activate the modem. ...Experience with Comcast/Xfinity...It works well with Comcast/Xfinity Gigabit service. I get ~ 920 Mbps download and 150 Mbps upload in my location."

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    Product Description

    The Nighthawk CM3000 multi-gigabit speed cable modem by NETGEAR supports link aggregation to deliver true multi-gigabit Internet speeds. The future-proof cable modem supports fast Internet speeds. This DOCSIS 3.1 cable modem is ready for any of today's service plans and future upgrades. Take a big leap forward with the next-generation Nighthawk CM3000 DOCSIS 3.1 high-speed cable modem with mid-/high-split technology, specifically engineered to handle fast cable Internet speeds. With upload speeds up to 1 Gbps and 2.5 Gbps download speeds, your entire family can enjoy 10 times faster upload and download speeds for lag-free gaming, crisp videoconferencing, smoother music and video streaming, and instant app downloads over DOCSIS 3.0.2. To push your performance even further, simply pair it with a NETGEAR Wi-Fi 7 router or Orbi system (sold separately). The Nighthawk CM3000 works seamlessly with most major US cable service providers, easily supporting 2 Gbps home Internet speeds and even up to 200 Mbps upload speeds delivered by Xfinity.
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    Top comment

    "The CM300 works great with Comcast/Xfinity...The CM3000 works great with Comcast/Xfinity. However, I had to call Xfinity support to activate the modem. ...Experience with Comcast/Xfinity...It works well with Comcast/Xfinity Gigabit service. I get ~ 920 Mbps download and 150 Mbps upload in my location."

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    Product Description

    The Nighthawk CM3000 multi-gigabit speed cable modem by NETGEAR supports link aggregation to deliver true multi-gigabit Internet speeds. The future-proof cable modem supports fast Internet speeds. This DOCSIS 3.1 cable modem is ready for any of today's service plans and future upgrades. Take a big leap forward with the next-generation Nighthawk CM3000 DOCSIS 3.1 high-speed cable modem with mid-/high-split technology, specifically engineered to handle fast cable Internet speeds. With upload speeds up to 1 Gbps and 2.5 Gbps download speeds, your entire family can enjoy 10 times faster upload and download speeds for lag-free gaming, crisp videoconferencing, smoother music and video streaming, and instant app downloads over DOCSIS 3.0.2. To push your performance even further, simply pair it with a NETGEAR Wi-Fi 7 router or Orbi system (sold separately). The Nighthawk CM3000 works seamlessly with most major US cable service providers, easily supporting 2 Gbps home Internet speeds and even up to 200 Mbps upload speeds delivered by Xfinity.
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    See all Cable Modems
  3. NETGEAR - 32 x 8 DOCSIS 3.0 Cable Modem - Black - Front_Zoom
    Top comment

    "Easy install by my daughter. Modems working well....Modem recommended by Comcast. Helpful staff at store....It's a modem, does what modems do. Easy setup and functions properly, using with Comcast service and a TP link router."

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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

    "Easy install by my daughter. Modems working well....Modem recommended by Comcast. Helpful staff at store....It's a modem, does what modems do. Easy setup and functions properly, using with Comcast service and a TP link router."

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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
  4. NETGEAR - Nighthawk DOCSIS 3.1 Cable Modem - Black - Front_Zoom
    Top comment

    "Forget Comcast modems...So much faster, and CHEAPER, than renting Comcasts modem! Worth the money!...Way better than Comcasts equipment!...I suffered with slow speeds and intermittent service until I replaced my Comcast equipment."

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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

    "Forget Comcast modems...So much faster, and CHEAPER, than renting Comcasts modem! Worth the money!...Way better than Comcasts equipment!...I suffered with slow speeds and intermittent service until I replaced my Comcast equipment."

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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
  5. ARRIS - SURFboard SB6183 16 x 4 DOCSIS 3.0 Cable Modem - White - Left_Zoom
    Top comment

    "Works great with Comcast....This modem was simple to set up and works well. Speed is dramatically better than the older modems on Comcast....Great modem...I bought this for my business to avoid paying comcast lease fees on their modem. Not only is this modem smaller and lighter, its also much faster than the comcast-issued boxes. "

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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

    "Works great with Comcast....This modem was simple to set up and works well. Speed is dramatically better than the older modems on Comcast....Great modem...I bought this for my business to avoid paying comcast lease fees on their modem. Not only is this modem smaller and lighter, its also much faster than the comcast-issued boxes. "

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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
  6. ARRIS - SURFboard 16 x 4 DOCSIS 3.0 Cable Modem & AC1600 Wi-Fi Router - Black - Front_Zoom
    Top comment

    "Excellent modem for Comcast...Used for comcast, works excellent as primary modem. I have the 200mb/s package from Comcast, hardwired to the modem I get d/l speeds of 220mb/s from this modem....Modem for Comcast...Works well with Comcast. Saves money in the long run"

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    Product Description

    An affordable upgrade for low-bandwidth households. The SURFboard SBG10 is a DOCSIS Cable Modem with built-in Wi-Fi Router. It's approved for cable internet speed plans up to 400 Mbps and features Wi-Fi speeds up to 1600 Mbps. Quick and easy setup with the SURFboard Central App.
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    Top comment

    "Excellent modem for Comcast...Used for comcast, works excellent as primary modem. I have the 200mb/s package from Comcast, hardwired to the modem I get d/l speeds of 220mb/s from this modem....Modem for Comcast...Works well with Comcast. Saves money in the long run"

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    Product Description

    An affordable upgrade for low-bandwidth households. The SURFboard SBG10 is a DOCSIS Cable Modem with built-in Wi-Fi Router. It's approved for cable internet speed plans up to 400 Mbps and features Wi-Fi speeds up to 1600 Mbps. Quick and easy setup with the SURFboard Central App.
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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

    "Great modem....Im now getting what I pay for from Comcast....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

    "Great modem....Im now getting what I pay for from Comcast....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 Modem & Router Combos
  8. NETGEAR - Nighthawk 32 x 8 DOCSIS 3.1 Voice Cable Modem - Black - Angle_Zoom
    Top comment

    "Easy setup with Comcast....Easy setup with Comcast. Increased my speeds over my outdated modem. ...Replacing a Comcast modem...Easy install other than needing to call Comcast. That took about 45 minutes of fiddling around. "

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    Product Description

    This NETGEAR Nighthawk ultra-high-speed cable modem for Xfinity Voice (CM2050V) delivers the gigabit-speed cable Internet and perfect call clarity. This DOCSIS 3.1 cable modem with voice supports all of today's Internet service plans and is designed for the high-performance Internet in the future. CM2050V includes two telephone ports that automatically prioritize voice over the Internet for clear and uninterrupted calls."
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    Top comment

    "Easy setup with Comcast....Easy setup with Comcast. Increased my speeds over my outdated modem. ...Replacing a Comcast modem...Easy install other than needing to call Comcast. That took about 45 minutes of fiddling around. "

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    Product Description

    This NETGEAR Nighthawk ultra-high-speed cable modem for Xfinity Voice (CM2050V) delivers the gigabit-speed cable Internet and perfect call clarity. This DOCSIS 3.1 cable modem with voice supports all of today's Internet service plans and is designed for the high-performance Internet in the future. CM2050V includes two telephone ports that automatically prioritize voice over the Internet for clear and uninterrupted calls."
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    See all Cable Modems
  9. ARRIS - SURFboard SB6190 32 x 8 DOCSIS 3.0 Cable Modem - White - Front_Zoom
    Top comment

    "Easy hook up with Comcast. Comcasts system recognized the modem right away with no problems at all. ...Great Modem for A Great Price...This modem was easy to install. Arris makes the best modems in the business. "

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    Product Description

    The ARRIS SURFboard SB6190 is a DOCSIS 3.0 cable modem with 32 downstream x 8 upstream bonded channels, making it a perfect addition to your home network. The SB6190 is best for cable internet speed plans up to 800 Mbps.
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    Top comment

    "Easy hook up with Comcast. Comcasts system recognized the modem right away with no problems at all. ...Great Modem for A Great Price...This modem was easy to install. Arris makes the best modems in the business. "

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    Product Description

    The ARRIS SURFboard SB6190 is a DOCSIS 3.0 cable modem with 32 downstream x 8 upstream bonded channels, making it a perfect addition to your home network. The SB6190 is best for cable internet speed plans up to 800 Mbps.
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    See all Cable Modems
  10. ARRIS - SURFboard SB8200 32 x 8 DOCSIS 3.1 Gig-Speed Cable Modem - White - Front_Zoom
    Top comment

    "Great modem...Perfect replacement for overpriced comcast rental modems. Fast, reliable and no problems...This is a speedy Modem! I replaced comcasts version with this unit and saw immediate speed increases. "

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    Product Description

    The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is capable of delivering true Gigabit speeds. It's approved for use with Cox, Spectrum, Xfinity and others supporting cable internet speed plans up to 1 Gbps. Upgrading your home network starts with your modem.
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    Top comment

    "Great modem...Perfect replacement for overpriced comcast rental modems. Fast, reliable and no problems...This is a speedy Modem! I replaced comcasts version with this unit and saw immediate speed increases. "

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    Product Description

    The ARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is capable of delivering true Gigabit speeds. It's approved for use with Cox, Spectrum, Xfinity and others supporting cable internet speed plans up to 1 Gbps. Upgrading your home network starts with your modem.
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    See all Cable Modems
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