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6 Modems That Work With Xfinity

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Do I Have to Use an Xfinity Modem with My Xfinity Cable Internet Service?

Setting up an Internet connection requires a lot of research. Consumers need to select a provider, find the appropriate package, and then deal with equipment like modems and routers. Because it can be overwhelming, many customers just sign up for everything — including equipment rentals — from their Internet Service Provider (ISP). However, one thing many consumers don’t realize is that they may be able to save money by purchasing their own modem instead of renting one.

For Xfinity® customers, there are many modems available for purchase that are compatible, easy to install, and affordable. As long as a device meets Xfinity’s suggested specifications, subscribers should have no problem accessing the Internet without any compromises to service.


What specifications determine compatibility?

It’s important for customers to understand which modems are approved by Xfinity to make sure that their service doesn’t suffer. To get the most out of their subscription, users should pay attention to a few things.

  1. Is the modem designed to handle high speeds? Different modems have different speed capacities. Buyers should make sure the modem can handle the speeds they’ve subscribed to.
  2. Is the modem certified DOCSIS 3.0 or higher? Xfinity recommends that all modems be DOCSIS 3.0 to ensure optimum security, speed, and capability.
  3. Is the modem free of any End of Life (EOL) or End of Service (EOS) ? Xfinity classifies outdated equipment as EOL or EOS. EOL devices receive limited (if any) support from the manufacturer or Xfinity. EOS devices are not compatible with Xfinity networks and must be replaced.

Subscribers who do their homework can purchase a modem that allows them the full benefit of their XFINITY service without the monthly rental fees.


What are some of the top compatible modems?

This list of compatible modems was compiled to help Xfinity customers who are considering buying a modem. The specs of each modem are detailed below, along with the purchase cost. Modems were selected based on price, popularity, and consumer reviews. Amazon Prime shipping is available on all listed modems unless otherwise specified.


Arris SURFboard SB6141 DOCSIS 3.0 Cable Modem

This modem is a top seller for Amazon and is fully compatible with Xfinity. With eight downstream channels and four upstream channels, it can process Internet speeds up to 131 Mbps upstream and up to 343 Mbps downstream. Users report simple setup and consistent, fast speeds after swapping out their rental modem for this one. Customers should note that white packaging indicates a new, original product, while black is used for refurbished modems.

Available on Amazon starting at $49.90.


SMC Networks D3CM1604 DOCSIS 3.0 Cable Modem

With 16 downstream and four upstream channels, this modem is fast enough for HD video streaming, high-speed gaming, and large file uploads. It is a smart choice for customers that need to support multiple devices at the same time. Customers give this modem good marks for speed and setup, but there are some concerns about how configurable it is, especially for security and changing default passwords.

Available on Amazon starting at $55.89.


ARRIS Touchstone TG862G-CT DOCSIS 3.0 Residential Gateway with Router

For customers who like the modem they’re renting, this might be the perfect choice. It is one of Xfinity’s mainstream modems and has been one that the company rents out. Consumers get both a modem and a router with this piece of equipment, which makes sense for those who want a reliable Wi-Fi connection. It is also capable of supporting two phone lines, so it is a good choice for Xfinity Voice or Triple Play customers. Activation may be a bit more difficult that with other modems, however.

Available on Amazon for $127.49.


NETGEAR CM500-100NAS DOCSIS 3.0 High Speed Cable Modem

Simple installation is one of the best features of this Xfinity-certified modem. It comes with 16 downstream and four upstream channels, and is capable of speeds up to 680 Mbps. However, this modem is not compatible with Xfinity Voice services. Users have reported instant increases in Internet speeds after installation. Setup typically takes between 10 and 20 minutes and doesn’t require a customer service call to Xfinity.

Available on Amazon starting at $89.99.


Zoom Telephonics 5370 DOCSIS 3.0 Cable Modem

This affordable modem is certified for use with the fastest Internet speeds available, including Xfinity’s Extreme 250 package. It has a top speed of 686 Mbps along with 16 downstream channels and four channels for upstreaming. When combined with a wireless router, this modem easily supports multiple users and devices for everything from video chat to real-time gaming. It’s easy to install without customer support and the modem runs cool, so overheating issues are minimized.

Available on Amazon starting at $64.99.


TP-LINK Archer CR700 AC1750 Wireless Dual Band 16×4 DOCSIS 3.0 Cable Modem and Router

Another two-in-one device, this modem-router combination is ideal for customers that want the freedom to simultaneously use multiple devices for multiple purposes. It features six internal antennas and amplifiers to boost signal strength. In addition, there are sixteen channels for downstreaming and four for upstreaming. Wi-Fi speeds up to 1750 Mbps and dual-core processors reduce the likelihood of interruptions, even when multiple users access the Internet. Setup can be more complicated than other modems listed, so users should prepare to speak to Xfinity customer service for help.

Buy this modem-router combination for $1390.99 on Amazon.


Xfinity customers aren’t tied to using the modems that are available for monthly rent. The certified modems on this list can save money and ensure that consumers are taking full advantage of the speeds they’re paying for. Users that are ready to bid farewell to monthly rental fees should purchase the suggested modem that best suits their needs and start saving now.


*Pricing and speeds are current as of writing. Pricing and speeds are subject to change. This is not an endorsement or guarantee for any particular modem. Consumers should thoroughly review all options before deciding to buy or lease a modem.

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