DOCSIS Device Compatibility and Capability

photo This site provides a list of all currently approved cable modems and EMTA devices. Use this site to ensure your device is compatible with the service level that you subscribe to. For additional information on End of Life (EOL) devices, please review the EOL FAQs.

Comcast strongly recommends customers only purchase devices that include a warranty and/or return policy. Cable modems and eMTAs operate with firmware/software and could make the device defective and inoperable if compromised in any way.

Click here to purchase a new DOCSIS 3.0 modem from Amazon

Click here for help with How to Install and Activate your purchased modem for Xfinity Service.

Select Your Speed Tier

Your device's DOCSIS version number matters if you subscribe to Comcast Performance, Blast!, or Extreme.

Not sure what your speed tier is?

You can find it listed on your monthly internet bill (click here to view a sample). For more information regarding your cable modem or speed tiers, please call 1-800-XFINITY for assistance.

For Xfinity customers who lease their device and require an upgrade to a D3.0 Wireless Gateway please click on the link below

Residential Speed Tiers

Show All

Economy Plus
Performance Starter
Performance Pro
Extreme 105
Blast Pro
Extreme 150
Extreme 250
Business Speed Tiers

Show All

Deluxe 25
Deluxe 50
Deluxe 75
Deluxe 100 Plus
Deluxe 150
Deluxe 250

DOCSIS Devices - All Speed Tiers

Once you have selected your speed tier (above), you can filter the list below to understand which retail devices are approved by Comcast to purchase and use. First, click the “Only Retail Devices” checkbox below. Next, scroll down the list to view all of the retail devices. Device models not listed may not be supported by Comcast and may not work on our network. For more information on using this page, click

Filter: End-Of-Life Devices DOCSIS 2.0 Devices Latest (DOCSIS 3.0) Devices Only Retail Devices