Comcast for Business DOCSIS 3.1 and 3.0 Cable Modems

Below are all the modems that Comcast has approved for their business customers to purchase and use on their network, as of January 2023. Comcast lists them on their website here: Comcast for Business Approved Cable Modem List. Prices below are updated every hour. There are over 70 different modems on that list, and we’ve gone through all of them to find the ones that can be bought at Amazon,Best Buy, or Walmart.

If you’re paying $14 a month to rent a modem from Comcast, that’s $168 a year, or $840 over 5 years. You can buy a new one that will pay for itself in less than six months. It’s easy to install. Just hook up the modem, and activate it on the Xfinity App. Read more at Xfinity here: Xfinity Activation Instructions

Comcast for Business Phone / Voice Customers and those that have Static IP, Connection Pro, Smart Office, WiFi Pro or Security Edge have to rent a cable modem from Comcast.

If you need further help with your decision or understanding some of the terms, see our Cable Modem Buying Guide.

Select your Comcast speed plan below. If it’s not listed, choose a plan that’s higher than your current one. This will allow you to get the maximum speed out of your plan. If you want to future-proof your purchase, as speed plans inevitably increase, we suggest selecting DOCSIS 3.1 from the DOCSIS menu below.

Comcast Speed Plan

Wi-Fi Built In

Sorted by price: low to high

- 30%
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Motorola MB7420 Front View
Motorola MB7420 Back View

Motorola MB7420 16×4 Cable Modem

Best deal at: Amazon.com
$48.98
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 16 Downstream Channels
- 14%
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ARRIS SB6183 Front
ARRIS SB6183 Back

ARRIS SURFboard SB6183 DOCSIS 3.0 Cable Modem

Best deal at: Best Buy U.S
$59.00
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 16 Downstream Channels
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Netgear CM500 Front
Netgear CM500 Back

Netgear CM500 DOCSIS 3.0 Cable Modem

Best deal at: Best Buy U.S
$59.99
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 16 Downstream Channels
- 39%
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Motorola MB7621 Front View
Motorola MB7621 Back View

Motorola MB7621 24×8 Cable Modem

Best deal at: Walmart.com
$66.99
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 24 Downstream Channels
- 25%
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ARRIS SB6190 Front View
ARRIS SB6190 Back View

ARRIS SB6190 SURFboard DOCSIS 3.0 Cable Modem

Best deal at: Amazon.com
$74.99
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 32 Downstream Channels
  • Puma 6 Chipset
- 17%
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Netgear CM700 Front View
Netgear CM700 Back View

NETGEAR CM700 High Speed DOCSIS 3.0 Cable Modem

Best deal at: Best Buy U.S
$99.99
  • DOCSIS 3.0
  • No built in Wi-Fi router
  • 32 Downstream Channels
  • Puma 6 Chipset

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