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ANSWERED: Finding Approved Xfinity Modems and Gateways

 Use the My Device Info website to easily check if your device is approved for Xfinity Internet service. You can also use this site to ensure that your modem supports your selected Internet speed tier.


**Note**: If you don't know your level of service, learn by reading a full breakdown of your Xfinity services.



Identifying Approved Retail Devices

Before purchasing a retail device through a third-party retailer, visit the My Device Info page to better understand which devices are approved by Comcast. For more details, see the Frequently Asked Questions below.

  1. To get a personalized experience, visit from your web browser, and click the Sign In button. Then, sign in using your Xfinity username and password.
    • Note: If you don't sign in or are not an Xfinity customer, you'll need to enter your ZIP Code and select a Download speed from the drop-down menu. Then, click the Find equipment button to display all equipment compatible with the download speed selected.
      Welcome screen with fields for Zip Code and Download speeds.
  2. Search for the specific retail device brand or model that you are considering purchasing. If the product is not listed, it may not be supported by Comcast.
    Search fields - equipment search at right.
  3. Click the View details link under the thumbnail image of a particular device. You can narrow search results by using the filters available on the left-hand side of the screen. Filtering options include:
    • Download Speed
    • Voice/Telephone Enabled
    • Show Unsupported Devices
      Note: This filter only appears if your search is performed via the Search for equipment field.
    • Built-in WiFi
    • Brand
    • DOCSIS Channels
    • DOCSIS Version
  4. If the device is compatible with your Xfinity Internet and/or Voice service, you'll see green text under a thumbnail image of the product along with other details about the product, including Device Type and Download Speed.
    Confirmation messaging in green: This device is compatible with your service download speed of 100 Mbps.
  5. Only supported devices will be presented, non-supported devices will not appear on the site.




Modem: This is the basic device you need to connect your home network to Comcast. A modem will provide a single ethernet connection. Most people connect the modem to a router in order to have more than one wired device and WiFi service. Some modems provide voice capabilities.


Gateway: Many people don't want to deal with a separate modem and router. A gateway device is a combination modem and router. They typically allow four wired connections and provide WiFi. Some gateway devices also provide voice capabilities. 


Channels: These are communication paths. The more channels the better. This is expressed as downstream channels x upstream channels. So a device that is labeled "32x8" has 32 downstream channels and 8 upstream channels. Higher speed tiers require modems with more channels. Each channel can handle ~25Mbps, therefore an eight channel modem would be capable of ~200Mbps. 







Can I bring my own equipment to Comcast?

You can purchase your own retail modem for use with your Xfinity Internet and/or Voice service as long as the equipment is certified to work on our network. Before making a purchase at the retailer of your choice, please visit to find certified retail equipment that's compatible with your service.



What are my responsibilities when purchasing and using my own equipment with Xfinity service?
You are responsible for ensuring that your retail device is secure, certified and compatible with Xfinity Internet service, and for upgrading your equipment when we increase speeds. Visit for compatibility. We recommend that you remain aware of new developments in technology to better understand when replacing your retail device may be necessary.

You will be responsible for troubleshooting device-related issues using the manufacturer's user manual if we have confirmed that your Xfinity Internet or Voice service is functioning properly. You will also be responsible for configuring your wireless network's security settings, if applicable.



How do I find the right retail equipment?
If you are currently an Xfinity Internet or Voice customer, you can find compatible retail equipment automatically. Just visit, and sign in for a personalized experience.

Once you've signed in, information about your existing device, download speed (if applicable) and all retail equipment certified and compatible with your existing service will be automatically displayed. You can further customize the results by adjusting filters such as Download Speed, Built-In WiFi and Voice/Telephone-enabled.

If you are not a currently an Xfinity customer, you can still find compatible retail equipment using your ZIP code and your desired Internet service speed.



What does it mean if my equipment is not supported and how do I determine that a piece of equipment is not supported?

If a device is not supported, it's not certified for use on our network and will not be activated as new or replacement equipment. You can determine if a piece of equipment is not supported using

For existing Xfinity Internet or Voice customers, if you attempt to use a piece of equipment that's not supported, the equipment will automatically display with a yellow indicator and notification once you sign into

To learn more about why devices become not supported, please see why upgrading your devices is important.



What should I do if my older retail equipment is not supported?

To get the most out of your service, you should consider replacing your retail equipment if it has been identified as not supported. You have the option to replace your older retail device by renting a Wireless Gateway, or by purchasing a certified and compatible device found on



When can I use retail equipment (cable modem/Wireless Gateway) that I already own or want to purchase with my Gigabit Internet service?
Gigabit Internet service is currently rolling out across the Comcast footprint. There are third-party, Comcast-certified retail cable modems and Wireless Gateways that support the service. However, even though you can purchase a device that is Comcast-certified and supports Gigabit download speeds, you cannot actually receive Gigabit speeds until the service is available in your local market. For availability details, please visit and view our rollout plan.



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