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Looking for a new reliable and fast internet connection, and considering Xfinity Internet plans in your area? Well, we must add, given the great variety of speeds offered over the largest Gig speed network, Xfinity from Comcast does make for a serious contender in any market that it serves. As the largest internet service provider with network coverage spanning 36 states, and over 31 million broadband customers in its fold, Comcast is a market leader which accounts for over 40% of all broadband internet subscriptions in the U.S.

A number of factors attribute to the widespread popularity of the Xfinity Internet service besides ready availability in urban and suburban regions. From the performance of your connection to the perks you get with your subscription, the flexibility of service and the price you pay, there is a variety of positives which make Xfinity Internet worth your shot. Xfinity also offers a variety of other residential services as well, i.e. Cable TV, digital home phone, and smart home security. And, Xfinity bundles continue to carry the legacy of consumer approval because they bring you real value for money.

Another good thing is while Xfinity is known for the induction of the latest available tech into its services and products, the provider does not forbid you from bringing your own device to the table. If you wish to save on the monthly rental fee, and hook up your internet connection with a third-party modem, you can surely do so. 

Our article today primarily discusses some of the best third-party modem routers you can use with Xfinity. But, let’s first give you a quick introduction to the benefits of the Xfinity-provided equipment. Like so you’d be able to evaluate as to whether you’d like to order an xFi Gateway with your subscription or use a third-party device instead.

The all-in-one Xfinity Modem-router

Xfinity offers 3 variations of its modem-router device i.e. the xFi Gateway, but in each case, you get a single compact unit that acts both as a modem and wireless router.

  • xFi Wireless Gateway (XB3) which supports speeds up to 700 Mbps
  • xFi Advanced Gateway (XB6) which supports speeds up to 1 Gbps
  • xFi Gateway 3rd-Gen (XB7) which supports speeds up to 2.5 Gbps


These all-in-one devices are designed to deliver Internet and Voice connectivity. And, while Xfinity allows you to BYOD, it is recommended you pair Xfinity Internet with the provider-supplied equipment for optimal output. Because this way you can benefit from fast speeds, whole-home WiFi coverage, network security, easy network control, and also remains eligible for exclusive Xfinity services.

  • The xFi gateways support the fastest internet speed over WiFi and provide coverage across your entire home. Also, if you live in a big house and need to extend the WiFi range further, the xFi Pods work seamlessly with the Gateway.
  • When you rent a Gateway from the provider, you also become eligible to use millions of Xfinity WiFi hotspots when on the go. This helps you save on mobile data and the hassle of looking for a secure high-speed connection outside the home.
  • Network control is at your fingertips with the free user-friendly xFi app that lets you set up your home network, manage and monitor connected devices, implement parental controls, and more.
  • You receive 24/7 customer support and regular software updates, and also enjoy the ease of DIY troubleshooting via the xFi mobile app.
  • To top all that, these devices also deliver Advanced Security to your in-home network.

Now, it is for you to decide if you want to pay $14/mo. to earn all these benefits. And, also do away with the hassle of maintaining your third-party device, or you would prefer to explore your third-party options.

Choose an approved Xfinity modem-router

For tech-savvy users who prefer to use their existing compatible modem-router or buy one to save on the monthly rental fee, it is of prime importance to make sure the third-party device is compatible with Xfinity.

If you already own an internet modem or gateway device that you would like to use, you can check on My Device Info to see if it is approved for the Xfinity Internet service. Here you can also see which Xfinity Internet speed tiers will your device be able to support.  

If however you do not already have an internet device lying around but would like to see your best options here is a listing of devices that you can use with different Xfinity Internet speed tiers. It includes some of the best modem-only devices as well as 2-in-1 modem-cum-routers.

Motorola MB7621   

Certified by Xfinity this 24x8 DOCSIS 3.0 cable modem is a great choice for Xfinity Internet plans ranging up to 400 Mbps. It comes with a 10/100/1000 Gigabit Ethernet LAN port and supports high speeds for computers, HDTVs, gaming consoles, streaming media devices, and almost any router you may want to use.

The Motorola device comes with a user-friendly setup and also advanced surge and lightning protection. Its advanced design, circuit technology, full-band capture digital tuner, IPV4, and IPV6 support, and 5 status-reporting LEDs are among other useful features. 

With wide-range compatibility, high-speed delivery, and a 2-year warranty that includes superb customer support, you cannot go wrong with the Motorola modem if you are looking to subscribe to an Xfinity Internet plan which delivers 300 or 400 Mbps fast downloads. The good thing is it won’t take up much shelf space either.

On Amazon, you can buy this cable modem for under $100.


This 16x4 DOCSIS 3.0 Netgear modem is a good budget option at $59.99 (MSRP), and supports Xfinity Internet plans up to 300 Mbps. It includes 1 LAN Gigabit Ethernet port with auto-sensing technology, which can be used to connect to your computer or almost any WiFi router. The device is easy to set up. You don’t need to use CDs. Just plug your Coax cable into the WAN coaxial cable port on the modem, and activate the device with Xfinity.

This cable modem comes with a 1-year Hardware Warranty that includes 24/7 basic tech support for the first 90 days if purchased from a Netgear certified reseller.   

Motorola MG8725

The Motorola MG8725 is a DOCSIS 3.1 cable modem with a WiFi 6 router, which says all about why it costs $299.99. The device not only features multi-gigabit DOCSIS 3.1 speed but a powerful AX6000 router as well as the motor sync app for malware and ad-blocking. The motor sync app also makes it easy for you to set it up, as well as manage the network.

With its 32x8 channels, this gateway device supports speeds up to 2.5 Gbps which means you can game, stream, and video conference on any number of devices without a lag. The MU-MIMO technology enhances network performance and efficiency and allows for multiple devices to connect seamlessly. With its intelligent band steering and backhaul feature, it redirects devices to the less congested band so that each gets a faster and stronger connection.

The gateway comes complete with network and device-level security. WPA2 security keeps your data secure, and you also get security alerts and insights via your mobile app.

Arris SURFboard G36

This Arris modem-cum-router device is a 32x8 DOCSIS 3.1 device with a robust AX3000 router, which is able to support Xfinity plans up to 1.2 Gbps. It gets you a 2.5 Gbps Ethernet port for multi-gigabit networking, and 4 more 1 Gigabit Ethernet ports for fast and reliable wired connections to devices such as smart TVs, gaming consoles, and more. Since it utilizes the latest WiFi 6 standard, you can expect top WiFi speeds for gaming and streaming.

You can set up the device with ease, and conveniently manage your network with the SURFboard mAX Manager app.

All in all, you can upgrade your home network and run it at peak performance with the G36 cable modem router for $299 (on Amazon). While that may sound like a rather steep number, remember this device gets you both the modem and router in one, plus it utilizes WiFi 6, so every penny you invest is likely to be worth it.   


Having introduced you to some picks from the many Xfinity-compatible modems and routers, we hope you are able to choose one that not only supports your chosen Xfinity Internet plan but fits your budget.

Understandably, if you are going for a modem-only device you must include a wireless router in the setup too. So, if you do not already own a WiFi router that you are planning to put to use, we recommend you pick a modem-router combo which makes things simpler and declutters your space too. It is certainly a sizable investment that you must make carefully. But if you are tech-savvy and want to stick to your own equipment, it may be just worth it. Especially if your chosen device is also compatible with multiple cable service providers leaving options open for you in the long haul.

With that said, for the less tech-savvy among you, we recommend sticking to the Xfinity xFi Gateway. That way you are all taken care of in terms of tech support as well as any upgrades or replacements that may be required. No need to drain your energy at figuring out which DOCSIS protocol should it be, how many channels must it have, how high an Xfinity speed tier will it support, and if it provides encrypted security to your in-home network. The xFi Gateway will answer all those questions without hassle!

To check available Xfinity Internet offers in your area, click here! And if you are an existing Xfinity customer looking to use your own device, you can contact Xfinity Customer Service for assistance. For assistance in Spanish, call Xfinity en Espanol at 844-207-8725. 

For more information, call Xfinity customer service at 844-207-8721.


  1. Can I use my own modem/router with Xfinity Internet?

Yes, you can use your own modem or router with Xfinity Internet, but make sure it is an Xfinity-approved device listed on the Xfinity My Device Info page.

  1. What should I do if my older modem is not supported by Xfinity?

If your existing modem is not supported by the Xfinity Internet service, you can choose to either rent the  Xfinity xFi Gateway or buy a device that is compatible with the Xfinity Internet plan you’re subscribed to.

  1. How much does the Xfinity WiFi modem cost?

The Xfinity WiFi modem, the xFi Gateway, costs $14/month on lease. It gets you a fast and secure connection for your connected devices and works perfectly with the xFi Pods in case you need to extend in-home coverage. Xfinity provides you with the device model according to the speed tier you are subscribed to.   

  1. Can I use an older modem/router with Xfinity Gigabit?

There is a variety of devices in the market that support the Xfinity Gigabit plan. But we recommend you check on the Xfinity My Device Info page to find out all your approved options.