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Tue, Mar 6, 2018 3:00 PM


ANSWERED: Finding Approved Xfinity Modems and Gateways

Find out more about buying and using your own Internet equipment (cable modem/gateway) instead of renting an Xfinity Wireless Gateway.

Keep in mind there are advantages to using an Xfinity Wireless Gateway, including access to value-added services such as xFi – our WiFi management platform – and usage of a home-based Xfinity WiFi hotspot.

Before making the decision to use your own equipment, find out what the Xfinity Wireless Gateway has to offer, including coverage, features, speed, and exclusive Xfinity services.

Find Out If Your Equipment Is Approved and Compatible with Xfinity Services

  1. Before buying your own equipment, use the My Device Info website to easily check if your device is approved for Xfinity Internet and/or Voice service.
  2. My Device Info shows a database of all approved cable modems. You can also use this site to make sure your modem or router supports your selected Internet speed tier.
  3. After checking this website for approved retail devices, visit for up-to-date information on the Internet speeds and other offers available in your area.
If you don't know your level of service, check your Xfinity services.

Identifying Approved Retail Devices

Before buying a retail device through a third-party retailer, go to 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, go to from your web browser and click Sign In. Then, sign in using your Xfinity ID and password.
    • Note: If you don't sign in or aren't 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 show all equipment compatible with the download speed you chose.
      Welcome screen with fields for Zip Code and Download speeds.
  2. Search for the specific retail device brand or model that you're considering purchasing. If the product isn't listed, it might not be supported by Comcast.
    Search field.
  3. Click the View details link under the thumbnail image of a specific 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 you search through 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 a message under the thumbnail image with details about the product, including Device Type and Download Speed.
    Confirmation messaging: This device is compatible with your service download speed of 250 Mbps.
  5. Only supported devices will appear. Non-supported devices won't show up on the site.


Frequently Asked Questions

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 buying from the retailer of your choice, please go to to find certified retail equipment that supports your Internet speed tier.

If you're an existing customer and need to know your level of service, see which level of Xfinity services you subscribe to. Then, after buying compatible retail equipment, install and activate it and start enjoying your service. To learn more, see more about installing and activating your purchased modem with Xfinity service.

What are my responsibilities when buying and using my own equipment with Xfinity service?
You're responsible for making sure your retail device is secure and certified, that it supports your Xfinity Internet service speed, and for upgrading your equipment when we increase speeds. Visit for compatibility. We recommend that you stay aware of new developments in technology to better understand when replacing your retail device may be necessary.

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

How do I find the right retail equipment?
If you're 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, you'll see information about your existing device, as well as download speed (if applicable) and all retail equipment certified and compatible with your existing service. You can customize the results by adjusting the filters, such as Download Speed, Built-In WiFi or Voice/Telephone-enabled.

If you're not currently an Xfinity customer, you can still find compatible retail equipment using your address and the Internet service speed you want.

Note: Please remember that modems require routers in most network configurations for features like WiFi or to support add-on products like Xfinity Home.

What does it mean if my equipment isn't supported, and how do I check if a piece of equipment isn't supported?
If a device isn't supported, it's not certified for use on our network and won't be activated as new or replacement equipment. You can check if a piece of equipment isn't supported using

Note: Uncertified and end-of-life equipment won't show up on

For existing Xfinity Internet or Voice customers, if you try 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 unsupported or end-of-life, please see Why Upgrading Your Devices is Important.

What should I do if my older retail equipment isn't 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 listed on To learn more about the Wireless Gateway from Xfinity, see Renting an Xfinity Wireless Gateway.

When can I use retail equipment (cable modem/gateway) that I already own or want to buy with my Gigabit Internet service?
There are third-party, Comcast-certified retail cable modems and gateways that support the Gigabit Internet service. To learn more about this service and to check if it's available in your area, visit



Expert-Created Content/Videos


***Created by our Community Experts***

Below is a list of Comcast/Xfinity approved retail modems and gateways that can be used in lieu of rental equipment. This is not an official list but is compiled and maintained by the community.  Please visit to verify that a specific device will work with your service.  If you find an error or information that needs to be updated, please feel free to send me a private message. Thank you!



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. 


To find your speed tier visit After you log into your account, your speed tier will be displayed on the left-hand side of your screen. Alternatively, you can view the speed tier to which you are subscribed here. Sign in and scroll down to the data usage graph area.


The List

Arris CM820A 8x4 modem

Arris SB6141 8x4 modem

Arris SB6183 16x4 modem

Arris SB6190 32x8 modem

Arris SBG6400 8x4 gateway

Arris SBG6580 8x4 gateway

Arris SBG6580-2 8x4 gateway

Arris SBG6700-AC 8x4 gateway

Arris SBG6782-AC 8x4 gateway

Arris SBG6900-AC 16x4 gateway

Arris SBG6950AC2 16x4 gateway

Arris SBG7400AC2 24x8 gateway

Arris SBG7580-AC 32x8 gateway

Asus CM-16 16x4 modem

Asus CM-32_AC2600 32x8 gateway

Belkin DPC3008 8x4 modem

D-Link DCM301 8x4 modem

Linksys CG6350 16x4 gateway

Linksys CG7500 24x8 gateway

Linksys CM3008 8x4 modem

Linksys CM3016 16x4 cable modem

Linksys CM3024 24x4 modem

Motorola MB7220 8x4 modem

Motorola MB7420 16x4 modem

Motorola MB7621 24x8 modem

Motorola MG7310 8x4 gateway

Motorola MG7315 8x4 gateway

Motorola MG7540 16x4 gateway

Motorola MG7550 16x4 gateway

Motorola MG7700 24x8 gateway

Netgear C3000-100NAS 8x4 gateway

Netgear C3000v2 8x4 gateway

Netgear C3700-100NAS 8x4 gateway

Netgear C3700v2 8x4 gateway

Netgear C6220 8x4 gateway

Netgear C6250-100NAS 16x4 gateway

Netgear C6300 16x4 gateway

Netgear C6900 24x8 gateway

Netgear C7000-100NAS 24x8 gateway

Netgear C7000v2 24x8 gateway

Netgear C7500 24x8 gateway

Netgear C7800 32x8 gateway

Netgear CBR40 32x8 gateway (Orbi)

Netgear CG3000DV2 8x4 gateway

Netgear CM400 8x4 modem

Netgear CM500-100NAS 16x4 modem

Netgear CM600 24x8 modem

Netgear CM700 32x8 modem

Netgear CMD31T-100NAS 4x4 modem

TP-LINK Archer CR700 16x4 gateway

TP-LINK Archer CR500 16x4 gateway

TP-LINK CR1900 24x8 gateway

TP-LINK TC-7610 8x4 modem

TP-LINK TC-7620 16x4 modem

TP-LINK TC-W7960 8x4 gateway

TP-LINK TC7650 24x8 modem

ZoomTelephonics 5341 4x4 modem

ZoomTelephonics 5341J 8x4 modem

ZoomTelephonics 5345 8x4 modem

ZoomTelephonics 5350 8x4 gateway

ZoomTelephonics 5352 8x4 gateway

ZoomTelephonics 5354 8x4 gateway

ZoomTelephonics 5360 8x4 gateway

ZoomTelephonics 5363 8x4 gateway

ZoomTelephonics 5370 16x4 modem


DOCSIS 3.1 Devices (required for gigabit speeds)

Motorola MB8600 32x8 modem (DOCSIS 3.1)

Arris SB8200 32x8 modem (DOCSIS 3.1)

Netgear CM1000 32x8 modem (DOCSIS 3.1)

Netgear CM1000-100NAS 32x8 modem (DOCSIS 3.1) 

Netgear CM1100 32x8 modem (DOCSIS 3.1)

Netgear C7800 32x8 gateway (DOCSIS 3.1)

Netgear CM1150V 32x8 telephony (DOCSIS 3.1)


Voice Capable Devices

Arris SVG2482AC 24x8 gateway telephony

Arris TG862G 8x4 gateway telephony (Same as TG862G-CT, TG862G/CT)

Arris TG862R 8x4 gateway telephony

Arris TM722G 4x4 modem telephony

Arris TM822G 8x4 modem telephony

Arris TM822R 8x4 modem telephony

Arris SBV3202 32X8 modem telephony

Netgear C7100V 24x8 gateway telephony

Netgear CM500V 16x4 modem telephony

Netgear CM1150V 32x8 gateway telephony (DOCSIS 3.1)

Motorola MT7711 24x8 gateway telephony








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