Xfinity Approved DOCSIS 3.1 and 3.0 Cable Modems

Below are all the modems that Xfinity has approved for their residential customers to purchase and use on their network, as of November 2022. Xfinity lists them on their website here: Xfinity Approved Cable Modem List. There are over 70 different modems on that list, and we’ve gone through all of them to find the ones that can be purchased at Amazon, Best Buy, Walmart or eBay. (We only show new eBay modems that can be returned and have free shipping.) Prices below are updated every hour.

If you’re paying $14 a month to rent a modem from Xfinity, that’s $168 a year, or $840 over 5 years. You can buy a new one that will pay for itself in less than four 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

Xfinity/Comcast Business Customers: See our Comcast Approved Modems for Business page for supported modems.
Xfinity Voice/Phone/Triple Play Customers:  See our Xfinity Approved Modems with Phone page for supported modems.

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

Select your Xfinity 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. Next, decide if you want a modem with a built in Wi-Fi router and what type. If you want to future-proof your purchase, as speed plans inevitably increase, we suggest selecting DOCSIS 3.1 from the DOCSIS menu below.

Wi-Fi Router Built In

DOCSIS

Sorted by price: low to high

- 33%
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ARRIS S33 Front View
Arris S33 Back View

ARRIS S33 SURFboard DOCSIS 3.1 Cable Modem

Best deal at: Amazon.com
$146.82
  • DOCSIS 3.1
  • No built in Wi-Fi router
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit and One 1 Gigabit Ethernet Ports
- 5%
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Motorola MB8611 Front View
Motorola MB8611 Back View

Motorola MB8611 Ultra-Fast DOCSIS 3.1 Cable Modem with 2.5Gb Ethernet

Best deal at: Walmart.com
$161.99
  • DOCSIS 3.1
  • No built in Wi-Fi router
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit Ethernet Port
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Netgear CM2000 Front View
Netgear CM2000 Back View

NETGEAR CM2000 Nighthawk Multi-Gig 2.5Gbps DOCSIS 3.1 Cable Modem

Best deal at: eBay
$174.00
  • DOCSIS 3.1
  • No built in Wi-Fi router
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit Ethernet Port
- 32%
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ARRIS G35 Front View
ARRIS G36 Back View

ARRIS G36 SURFboard DOCSIS 3.1 Gigabit Modem Plus Wi-Fi 6 Router

Best deal at: Amazon.com
$229.99
  • DOCSIS 3.1
  • AX3000 Wi-Fi 6 router built in
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit and Four 1 Gigabit Ethernet Ports
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Netgear CAX80 Front View
Netgear CAX80 Back View

NETGEAR CAX80 Nighthawk DOCSIS 3.1 Cable Modem + WiFi 6 Router

Best deal at: eBay
$339.99
  • DOCSIS 3.1
  • AX6000 Wi-Fi 6 router built in
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit and Four 1 Gigabit Ethernet Ports
  • One USB 3.0 Port
- 5%
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Motorola MG8725 Front View
Motorola MG8725 Back View

Motorola MG8725 DOCSIS 3.1 Cable Modem + WiFi 6 Router

Best deal at: Walmart.com
$379.99
  • DOCSIS 3.1
  • AX6000 Wi-Fi 6 router built in
  • 32 Downstream Channels + 2 OFDM
  • One 2.5 Gigabit and Three 1 Gigabit Ethernet Ports

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