Best Modem For Xfinity (2024) – Xfinity Compatible Modems

Best Xfinity Compatible Modems

If you are one of the 32 million Comcast Xfinity customers in the US and you want to improve your internet connection, investing in a third-party Xfinity compatible modem is a priority.

The best modem for Xfinity is fitted with the DOCSIS 3.1 technology, 32*8 channel bonding and gigabit internet speed.

Getting a third-party Xfinity compatible modem allows you to utilize the latest performance and security technology, while also eliminating the monthly rental fees.

Using the Xfinity Gateway as an example, you could save up to $180 per year on rental fees if you invested in a third-party modem.

We tested 22 different Xfinity approved modems and has narrowed down the choice to the top 8 products, which have been reviewed below.    

Editor's Choice
Motorola MB8611

Our editor’s choice for the best modem for Xfinity is the Motorola MB8611. It is one of the most future-proof and fastest modems that can support up to 2500 Mbps and features the ultra-fast DOCSIS 3.1 technology which allows you to experience Gigabit-plus speeds on your devices. The 2.5 GB Ethernet port provides high-speed internet connectivity to even the fastest computers and routers.

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Modem Router Combo
ARRIS Surfboard G36

ARRIS SurfBoad G36 is the best modem router combo for Xfinity. It combines the powerful functions of the DOCSIS 3.1 and WiFi 6 technologies to lower the latency for high-bandwidth applications like gaming, conference calls, and 4K streaming as well as enhance the performance and efficiency of your whole network.

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Budget Friendly
ARRIS Surfboard S33

The ARRIS Surfboard S33 is an affordable option for those on a limited budget. It features ultra-fast DOCSIS 3.1 support which provides gigabit-plus speeds and supports fast internet plans by Comcast Xfinity. The DOCSIS 3.1 technology ensures that you have better security for your network, minimized lag when gaming, and multi-gig networking for faster speeds.

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Also, to help you identify the best product based on your needs, we’ve categorized the reviews based on certain criteria such as budget-friendly, Comcast Voice, combo and mesh setups. 

Best Modem For Xfinity (2024)

Top 9 Xfinity Compatible Modems 

Buying your modem means saving money on monthly rental fees, but the device that you purchase should be compatible with Xfinity internet services.

Below we present the top 9 modems that can be used with Comcast Xfinity. This list is compiled following rigorous testing of 22 modems, with the top performers in terms of design and performance making our final list.

1. Motorola MB8611 (Editor’s Choice)


The Motorola MB8611 is one of the most future-proof and fastest modems that can support up to 2500 Mbps. It weighs 1.1 ounces and measures 0*7.25*7.88 inches.

It has a standard design as it is a rectangular box with 5 LED lights on the front for indicating its connection and status.

There are three inputs on the backside of this device. One 2.5 Gbps Ethernet port for connecting a device or router, one coax port for plugging in the coaxial cable, and the power input.


The Motorola MB8611 features ultra-fast DOCSIS 3.1 technology which allows you to experience Gigabit-plus speeds on your devices.

The 2.5 GB Ethernet port provides high-speed internet connectivity to even the fastest computers and routers, and from our experience, it delivers upstream speeds of up to 800 Mbps and downward speeds of just below 2500 Mbps.

You can connect to any game station, smart TV, or other devices that can be connected through the ethernet cable. 

When testing we noticed better app performance and minimized internet latency for faster streaming, conferencing, and online gaming, due to the Active Queue Management (AQM) feature.

The setup of the MB8611 is straightforward and easy with just three connections including plugging it into the power source, connecting the coax cable to the router, and then the ethernet cable to your devices.

Finally, activate the modem by calling the ISP or self-activation through their website.

Who It’s For

The Motorola MB8611 is for those looking to invest in a long-lasting cable modem that can serve them for years to come.


  • Speed: 2500 Mbps
  • Range: good coverage
  • Channel Bonding: 32*8
  • Ports: 1 2.5 Gbps LAN and 1 Coax


  • Fast internet connection.
  • Future-proof design.
  • Reduced internet latency.
  • Easy to set up.


  • Minor issues when updating the firmware.

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2. ARRIS SurfBoard G36 (Best Modem Router Combo)


The ARRIS SurfBoard G36 combines the powerful functions of the DOCSIS 3.1 and WiFi 6 technologies to lower the latency for high-bandwidth applications like gaming, conference calls, and 4K streaming as well as enhance the performance and efficiency of your whole network.

The G36 allows you to enjoy the fastest streaming and downloading throughout your home as it increases the capability of your network.

It can deliver speeds of up to 3000 Mbps and cover a space of up to 2500 sq. ft.


The ARRIS SurfBoard G36 is powered by the Intel Puma 2-core processor which enables it to handle multiple devices simultaneously with minimum congestion.

The latest DOCSIS 3.1 modem technology allows the G36 to deliver multi-gig networking for faster speeds, minimize lag when gaming, and provide better security for your network.

It is easy to set up the G36. The first thing that you need to do is connect it to the power source, download the SURFboard Central App, and finally activate it using the simple instructions provided on the screen.

Once the device is set up, you can add devices to your network and customize the settings according to your preferences.

The app features enhanced parental controls such as setting time limits, pausing the internet, and more, allowing you to monitor the connected devices in real time, create and manage guest networks, and access basic WiFi settings.

The G36 is equipped with five ethernet ports (four 1-gig and one 2.5-gig) so that you can connect your smart TV, PC, gaming consoles, and streaming players and experience faster and more reliable wired connectivity.

The 2.5-gig ports support your future and current service plans of up to 2.5 GB.

Who It’s For

If you are looking for the best modem router combo to connect to Comcast Xfinity internet and experience top performance and faster speeds, the ARRIS SurfBoard G36 is the option for you.


  • Speed: 3000 Mbps
  • Range: 2,500 sq. ft.
  • Channel Bonding: 32*8
  • Ports: 5


  • Supports link aggregation.
  • Suitable for high-demand gaming and streaming.
  • Future-proof as it is equipped with DOCSIS 3.1 support.
  • Faster wired connections.
  • Easy to set up.


  • You might need to reboot the modem from time to time to keep it running smoothly.

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3. ARRIS Surfboard S33 (Budget Friendly)


The ARRIS Surfboard S33 is a vertical device that comes with LED lights on the front and Power, Ethernet, and coaxial cable ports in the back.

The rounded structures provide a sense of solidarity and stability to the whole device.

The ARRIS S33 is very portable as it measures 5.24*5.24*1.65 inches and weighs 1.52 pounds. It also comes with heat-dissipating vents for preventing overheating.


The ARRIS Surfboard S33 features ultra-fast DOCSIS 3.1 support which provides gigabit-plus speeds and supports fast internet plans by Comcast Xfinity.

Additionally, its backward compatibility allows you to have DOCSIS 3.0 connections.  

The DOCSIS 3.1 technology ensures that you have better security for your network, minimized lag when gaming, and multi-gig networking for faster speeds on your copper cable from your provider.

This device comes with one 1-Gig ethernet port and one 2.5-Gig ethernet port which allows you to connect it to a WiFi router or any other wired device and enjoy Gig-level speeds on your devices.

The streaming and gaming performance of the S33 has no lagging or latency.

The setup of the Surfboard is simple and secure. The first step is to connect the device to a power outlet, download the app (SURFboard Central), and finally activate the modem by following the manual instructions.

Then connect the modem to your WiFi router to create a network for your devices.

The multi-core processor is paired with 1GB RAM to easily reduce any form of congestion while the 2*2 OFDMA channel support ensures that you have enhanced transmission of data.

The ARM-based chipset helps you to prioritize certain transmission needs with urgency using the integrated spectrum analyzer.

Who It’s For

The ARRIS Surfboard is recommended for individuals who are into streaming, gaming, or looking to set up IoT connections that need higher bandwidth in their home or office. It also comes with a multi-gig port.


  • Speed: 2500 Mbps
  • Range: full-home coverage
  • Channel Bonding: 32*8
  • Ports: 2 Ethernet ports


  • Comes with the latest networking specs.
  • Prevents overheating.
  • Features ultra-fast processor.
  • Has multi-gig port.
  • Follows a new design pattern.


  • Does not have telephone call capability.

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4. Netgear Nighthawk CM2050V (Best For Voice Service)


The Nighthawk CM2050V is made of hardened plastic which makes it durable and has the same vertical layout as its predecessor but with a fresh update.

It measures 10*9.13*4.8 and has 7 LED lights on the front panel to show the status of the connection and modem.

We tested modem performance with the Xfinity Voice service and the CM2050V came out on top. The product works better in office and business setups as it comes with two phone jacks and one 2.5 gig LAN port.


The Nighthawk CM2050V has the latest generation DOCSIS 3.1 technology which is 10 times faster compared to the previous generation DOCSIS 3.0 technology and it features 32 *8 channel bonding.

When it comes to the ports, the CM2050V comes with one ethernet port that allows you to get multi-gig speeds and two phone lines for connecting your landline phone to the modem and it supports a three-way conference call meaning you can add another person to a two-people conversation.

Additionally, you can redirect incoming calls to other phone numbers as it supports call forwarding.

Features such as QoS functionality, IPV6, and 2*2 OFDMA support ensure your devices have a faster internet connection and performance while the integrated bandwidth tuner improves the WiFi speeds of this device.

Setting up the CM2050V is very easy with only four steps to follow: First, connect the coax cable to the modem.

The second step is to activate the modem by either calling the cable provider to activate it over the phone or connecting your computer to the modem using the ethernet cable and following the set-up instructions on the screen.

The third step is to connect the modem to your router using an ethernet cable and finally, plug in 2 telephone lines.

Who It’s For

The Netgear CM2050V is suitable for you if you are subscribed to Xfinity Voice and Internet bundle, and it can handle Xfinity triple play.

Also, if you are looking to upgrade from the CM1150V, this device is for you, courtesy of the multi-gig port, a new design, and an efficient hardware setup.


  • Speed: Cable plans of up to 2.5 Gbps
  • Range: whole-home coverage
  • Channel Bonding: 32*8
  • Ports: 1 Ethernet plus 2 Voice


  • Efficient performance and hardware.
  • Has a built-in QoS.
  • Comes with LED indicator lights.
  • OFDMA channels.
  • Phone ports are compatible with Xfinity Voice plans.


  • Only works with Xfinity.

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5. Netgear Orbi CBK752 (Mesh System)


The Orbi CBK752 is a mesh router that enables you to stream or game without any lagging or inconsistencies because it is very effective in congestion management, traffic prioritization, and throughputs.

Additionally, it comes with state-of-the-art features, three bands as well as technologies like DOCSIS 3.1 and WiFi 6 to ensure that it achieves higher internet speeds of up to 4200 Mbps.

The CBK752 weighs 8.5 pounds and measures 11.4*10.3*8.9 inches and comes in white.


From our testing the Orbi CBK752 performed strongest in terms of WiFi coverage.

We setup the modem router and one satellite in a 5000 sq ft property, and coverage was available in every corner of the building.

The strong coverage is enabled through combining the functions of a router and modem with internal antennas to create a mesh network.

Also, the WiFi 6 support is the latest technology and enables you to achieve faster speeds compared to the previous generation and it provides more capability allowing you to connect up to 40 devices.

You can use the Orbi App to easily set up the CBK752 by following the easy steps provided on the screen.

The app will allow you to manage the various settings of your network, test the speed of your internet, and monitor how you and your family are using the data.

The CBK752 comes with smart parental controls which is very useful if you have younger users in your home.

You can use this feature to control what your kids are doing on the internet and prevent them from watching or downloading harmful content.

To ensure that your devices and network are safe and secure, this device comes with the NETGEAR Armor, meaning you can download, stream, or game freely without any worry.

The ethernet ports enable you to establish wired connections to your devices including game consoles, computers, and streaming players.

Who It’s For

The Orbi CBK752 is for those looking for a modem router combo or a device that enables strong coverage in a large home or workplace.


  • Speed: 4200 Mbps
  • Range: Up to 40 devices and up to 5000 sq. ft.
  • Channel Bonding: 32*8
  • Ports: 6 Ethernet ports


  • Delivers extensive coverage.
  • Has tri-band support.
  • Comes with the latest modem and WiFi technology.
  • Easy to set up and manage.
  • Features the QoS prioritization.


  • Not budget friendly.

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6. Netgear Nighthawk CM1200 (For Gaming)


The Netgear CM1200 comes with DOCSIS 3.1 modem technology and 32*8 channel bonding to provide you with the fastest internet connection.

It weighs 2.32 pounds and measures 6.1*3.4*10.3 inches and comes in black.

The CM1200 features four Ethernet ports so that you can establish a faster-wired connection to your game box, printer, separate WiFi router, computer, and other devices.


The Netgear CM1200 has a multi-gig feature that allows for link aggregation for combining two 1-Gig ports to form one 2G port to ensure that your wired ethernet connections are fast.

The CM1200 is built for serious speed as it supports cable internet plans of up to 2 Gbps to make sure you have a reliable and fast internet speed for HD streaming and downloading.

This modem works well with any WiFi router, so you just need to connect the modem to the router and start downloading and streaming.

Setting up the CM1200 is very fast and easy as you follow three simple steps which include, connecting the coax cable to your modem, activating it by calling your provider, or following the steps on your computer when it is connected through the ethernet cable, and finally connecting the modem to your router using the ethernet cable.

Who It’s For

The Netgear CM1200 is recommended for individuals looking to save on modem rental fees and get a cable modem that can offer faster speeds for your gaming and streaming needs.


  • Speed: Up to 2 Gbps
  • Range: full-home coverage
  • Channel Bonding: 32*8
  • Ports: 4 Ethernet ports


  • Saves on modem rental fees.
  • Can connect to any WiFi router of your choice.
  • Reliable and fast internet.
  • The setup is easy and simple.


  • Has constant reboots.

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7. Netgear CM500 (Basic Modem)


If you are on a budget and looking for a good modem that is compatible with Comcast Xfinity, the Netgear CM500 is the best option for you. This device measures 4.9*7.3*2.4 inches and weighs 1.46 pounds.

It has a standard design and comes with air vents that are well-positioned to prevent overheating.

To ensure that you know the status of your network, the CM500 comes with 5 LED lights on the front side. The rear panel of this device has a power port and cable input.


Buying the Netgear CM500 to connect to a 400 Mbps internet plan is appropriate as it comes with DOCSIS 3.0 technology and 16*4 channel bonding which makes it backward compatible with DOCSIS 2.0 devices.

When it comes to port arrangement, the CM500 has only one ethernet port which is justifiable given its price.

The Broadcom chipset makes the CM500 cut through interference easily for smooth internet connections.

We tested online gaming performance on each modem and this device performed well in handling latency, largely due to the 128MB of RAM.

Additionally, it has 8MB of NAND flash memory that can store firmware details on your device.

Additional features include the Quality of Service support to improve traffic prioritization where certain devices can get more bandwidth when they are being used for tasks that require more data.

You can easily set up the CM500 in five minutes by following these steps:

First, connect the coax cable to the modem, then activate the modem by either connecting the ethernet cable to a computer and following the steps on the screen or calling the provider to activate the modem through the phone.

Finally, connect the modem to the WiFi router via the ethernet cable and you are ready to connect your devices.

Who It’s For

If you are looking for a modem that you can pair with a 400 Mbps internet plan and other low-tier plans, the Netgear CM500 is for you.

It is cheaper but still gives you the best internet performance that you need for faster connections.


  • Speed: Up to 400 Mbps
  • Range: good range
  • Channel Bonding: 16*4
  • Ports: 1 Gig Ethernet


  • It is affordable.
  • Supports QoS.
  • Easy to set up.
  • Fast and reliable internet.


  • Less ventilation.

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8. ASUS CM-AX6000 (WiFi 6 Modem/Router)


The ASUS AX6000 has an elegant and small design with a WiFi antenna embedded in it making it the smallest cable gateway in the cable industry. It weighs 1.96 pounds and measures 8.07*5.31*4.72 inches.

Additionally, it has a fan-less design that provides 100% passive cooling which prevents overheating and lets you enjoy a noise-less internet experience.

The ASUS AX6000 comes with high-efficiency WiFi 6 which allows you to enjoy internet speeds of up to 6000 Mbps.


The router part of the ASUS AX6000 features the next-generation 802.11ax WiFi speed that supports 1024-QAM and 160MHz bandwidth to deliver dramatically faster wireless connections to your devices. The 802.11ax is 2.3 times faster than the 802.11ac.

On the other hand, the modem part of this device features DOCSIS 3.1 support to provide huge progress in upload and download internet speeds so that you can enjoy your current internet service and the fastest speeds.

When you buy the ASUS AX6000, you save on monthly rental fees, and you get more with the combined modem and router.

This single and powerful package allows you to enjoy the latest AX WiFi coverage and throughput as well as cable modem technology that is future-proof.

The AX6000 comes with four ethernet ports which give you more connectivity options for your devices including game consoles, smart TV, NAS devices, and more so that they can have their dedicated ports. This makes the ASUS AX6000 a digital home hub.

Who It’s For

The ASUS AX6000 is recommended for users who are looking for a high-speed modem router combo that comes with exceptional speeds for HD streaming, downloading, and turning their houses into smart homes.


  • Speed: 6000 Mbps
  • Range: Extensive coverage
  • Channel Bonding: –
  • Ports: 4 Ethernet ports


  • Stable and great WiFi.
  • Great performance.
  • Great cooling system.
  • Easy instructions for setting it up.
  • You can manage the settings easily.


  • Issues when activating the device.

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9. Netgear Nighthawk CAX80 (High-Performance Modem Router Combo)


The Netgear Nighthawk CAX80 features the DOCSIS 3.1 modem technology with 32*8 channel bonding and WiFi 6 technology to ensure that everyone in your home has uninterrupted gaming, downloading, and streaming.

The CAX80 delivers dual-band WiFi 6 internet speeds of up to 6 Gbps on the 2.4 GHz and 5 GHz bands. This speed is faster compared to a WiFi 5 router or range extender.

The CAX80 can connect to 30 devices simultaneously and delivers coverage of up to 2500 sq. ft. 


The Netgear Nighthawk CAX80 is equipped with four 1-gig ethernet ports, one 2-5 multi-gig LAN or internet port, and one USB 3.0 port.

The USB port enables you to connect a storage drive for storing and sharing files while the internet port supports port aggregation which increases your speed to up to 2 Gbps for faster streaming and gaming.

The ethernet ports enable you to connect your wired devices such as streaming players, computers, and gaming consoles for faster and smoother connections.

The NETGEAR Armor delivers an automatic shield of security to your network and devices to protect against online attacks and threats. For extra security, the CAX80 supports WPA3/WPA2/WPA wireless security protocols.

It is easy to set up and activate the CAX80. First, connect the modem router combo to the coax cable. the second step is to activate the CAX80 by either following the steps on your computer once you connect it to the combo using an ethernet cable or calling your ISP.

Finally, download the Nighthawk app and follow the steps to set up and customize your network.

Who It’s For

The Netgear Nighthawk CAX80 is suitable for users who are looking for a high-performing modem router combo that delivers better throughput, faster speeds, and enhanced security for your entire network.


  • Speed: Up to 6 Gbps
  • Range: Up to 2500 sq. ft.
  • Channel Bonding: 32*8
  • Ports: 5 Ethernet, 1 USB 3.0


  • Simple setup.
  • Better throughput.
  • High performance.
  • Includes malware apps.
  • Great options for configuration.


  • It’s not a good option for houses over 2500 sq. ft.

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Factors To Consider When Looking For The Best Xfinity Compatible Modems

Comcast Xfinity Approved Modems


Before buying a modem router combo, you need to consider both your router’s speed and the internet speed from your service provider. This is because the performance of your device can be affected by your ISP’s speed.

WiFi speed is mainly dictated by the WiFi protocol that the router is equipped with, therefore you need to align the modem capability with the router’s WiFi standard. The current router WiFi standards that are available are WiFi 5, WiFi 6, WiFi 6E and WiFi 7.

A modem with DOCSIS 3.0 is best for lower-speed internet plans of 500 Mbps and below, along with a WiFi 5 router.

A modem with DOCSIS 3.1 is best for routers with WiFi 6, WiFi 6E or WiFi 7 standards, as they can handle internet plans of 1 Gbps and above.

As a general rule, you should purchase a modem that exceeds the capability of your internet plan to maximize performance.

DOCSIS 3.1 vs DOCSIS 3.0

DOCSIS serves as the standard for cable modems to transmit data to and from your residence.

Currently, most modems available are either DOCSIS 3.0 or DOCSIS 3.1. DOCSIS 3.1 offers speeds of up to 10 Gbps, while DOCSIS 3.0 supports speeds of up to 1 Gbps.

Consider both options, as each has its advantages and disadvantages. Generally, DOCSIS 3.0 suffices for plans under 1 Gbps.

However, for Comcast Xfinity, opting for a DOCSIS 3.1 modem is recommended to future-proof your device against anticipated speed enhancements.

DOCSIS 3.1 Pros

  • Future-proof technology.
  • Faster connections.
  • Lower latency when streaming and gaming.

DOCSIS 3.0 Pros

  • Cheaper
  • Sufficient for most households

Channel Bonding

When opting for a DOCSIS 3.0 modem, it’s important to consider the number of channels required.

To meet Xfinity’s approval, the modem should have between 16×8 and 32×8 channels to ensure optimal performance and compatibility.

In the channel configuration of a modem, the first number represents the download channels, while the second number represents the upload channels.

The lower second number is due to the typical consumer usage pattern, which involves more downloads than uploads.

As a general guideline, more channels in a modem allow for faster speeds, although the specific capability depends on the DOCSIS protocol.

When selecting a modem, consider your required speeds and choose one that aligns with your plan, ensuring the channels are suitable for your desired performance.

Compatibility With Comcast Xfinity

Another factor to consider when buying a modem router combo is its compatibility with Comcast Xfinity internet services.

For a modem router combo to deliver the best performance and reliable speeds it should be compatible with the service provider you are subscribed to.

If you purchase a device that is not compatible with Comcast Xfinity, you will experience network drop-offs, unstable connections, and poor performance.

That’s why choosing one of the modem router combos provided in the list below will ensure that you have a smooth connection since it is approved by Comcast Xfinity.


When selecting a modem or modem/router combo, consider the number and type of Ethernet ports.

Standard Ethernet ports typically support 940 Mbps, while newer ones can handle speeds up to 2500 Mbps, providing faster and more efficient wired connections.

Unless Ethernet Aggregation is utilized, a modem with a standard Ethernet port will not exceed 940 Mbps.

Hence, it is advisable to consider a modem with a 2.5 Gigabit port, as the added performance outweighs the minimal extra cost for most users.

If you anticipate utilizing numerous wired internet connections, it is essential to consider the number of ports you will require when selecting a modem/router combo.

Modem Router Combo vs Separate Units

When choosing between a modem/router combo (gateway) or separate devices, it’s important to consider the distinctions.

Gateways combine a modem and router in one unit, while separate devices consist of a standalone modem and router connected via Ethernet cable.

While both options have advantages, we recommend opting for separate devices. This allows for individual replacement in case of obsolescence or damage, offers improved performance, and grants greater control over the network.

However, it’s worth noting that gateways have their advantages. They offer convenience, require less setup, and often have a lower upfront cost. Additionally, Comcast offers a variety of reliable gateways to choose from.

Separate Pros

  • Better performance.
  • Can change one device instead of both.
  • You get more control over your network.

Combo Pros

  • More convenient.
  • Often easier setup.
  • The upfront cost is cheaper.

Comcast Xfinity Approved Modems

ArrisT2532x8No WiFiCable Modem
ArrisG3632x8AC3000Modem Router Combo
ArrisG3432x8AC3000Modem Router Combo
ArrisS3332x8AC2550Cable Modem
ArrisSBG830032x8AC2350Modem Router Combo
ArrisSB820032x8No WiFiCable Modem
ArrisSBV320232x8No WiFiCable Modem
ArrisSBG7600AC232x8AC2350Modem Router Combo
ArrisSBG7580-AC32X8AC1750Modem Router Combo
ArrisSBG7400AC224x8AC2350Modem Router Combo
ArrisSB619032x8No WiFiCable Modem
ArrisSVG2482AC24x8AC1750Modem Router Combo
ArrisSBV240224x8No WiFiCable Modem
ArrisSBG1016x4AC1600Modem Router Combo
ArrisSB618316x4No WiFiCable Modem
ArrisSBG6950AC16x4AC1900Modem Router Combo
ArrisSBG6900-AC16x4AC1900Modem Router Combo
ArrisTG862R8x4N300Modem Router Combo
ArrisTM822R8x4No WiFiCable Modem
ArrisSBG65808x4N600Modem Router Combo
ArrisTM822G8x4No WiFiCable Modem
ArrisCM820A8x4No WiFiCable Modem
ArrisTG862G8x4N300Modem Router Combo
ArrisSB61418x4No WiFiCable Modem
ArrisSBG6700-AC8x4AC1600Modem Router Combo
ArrisSBG6580-28x4N600Modem Router Combo
ArrisSBG64008x4N300Modem Router Combo
ArrisSBG6782-AC8x4AC1750Modem Router Combo
ArrisTM722G4x4No WiFiCable Modem
ASUSCM-3232x8AC2600Modem Router Combo
ASUSCM-1616x4No WiFiCable Modem
CiscoDPC30088x4No WiFiCable Modem
D-LinkDCM3018x4No WiFiCable Modem
HitronCDA-CCC4x4No WiFiCable Modem
LinksysCM302424x8No WiFiCable Modem
LinksysCG750024x8AC1900Modem Router Combo
LinksysCG635016x4AC1200Modem Router Combo
LinksysCM301616x4No WiFiCable Modem
LinksysCM30088x4No WiFiCable Modem
MotorolaMB860032x8No WiFiCable Modem
MotorolaMB861132x8No WiFiCable Modem
MotorolaMT771124x8AC1900Modem Router Combo
MotorolaMG770024x8AC1900Modem Router Combo
MotorolaMB762124x8No WiFiCable Modem
MotorolaMG754016x4AC1600Modem Router Combo
MotorolaMB742016x4No WiFiCable Modem
MotorolaMG755016x4AC1900Modem Router Combo
MotorolaMG73108x4N300Modem Router Combo
MotorolaMB72208x4No WiFiCable Modem
MotorolaMG73158x4N450Modem Router Combo
NetgearCM200032x8No WiFiCable Modem
NetgearCM120032x8No WiFiCable Modem
NetgearCM1150V32x8No WiFiCable Modem
NetgearCM110032x8No WiFiCable Modem
NetgearCM1000v232x8No WiFiCable Modem
NetgearCM1000-1AZNAS32x8No WiFiCable Modem
NetgearCM100032x8No WiFiCable Modem
NetgearCM2050V32x8AC2500Modem Router Combo
NetgearCAX8032x8AX6000Modem Router Combo
NetgearC780032x8AC3200Modem Router Combo
NetgearCM60024x8No WiFiCable Modem
NetgearCM70032x8No WiFiCable Modem
NetgearCBR4032x8AC2200Modem Router Combo
NetgearC690024x8AC1900Modem Router Combo
NetgearC7000-1000NAS24x8AC1900Modem Router Combo
NetgearC7100V24x8AC1900Modem Router Combo
NetgearC7000v224x8AC1900Modem Router Combo
NetgearC750024x8AC3200Modem Router Combo
NetgearCM500V16x4No WiFiCable Modem
NetgearC6250-100NAS16x4AC1600Modem Router Combo
NetgearCM500-100NAS16x4No WiFiCable Modem
NetgearC6300v216x4AC1750Modem Router Combo
NetgearC630016x4AC1750Modem Router Combo
NetgearC3700v28x4N600Modem Router Combo
NetgearCM4008x4No WiFiCable Modem
NetgearC3000v28x4N300Modem Router Combo
NetgearC62208x4AC1200Modem Router Combo
NetgearCG3000DV28x4N450Modem Router Combo
NetgearC3000-1000NAS8x4N300Modem Router Combo
NetgearC3700-100NAS8x4N600Modem Router Combo
NetgearOrbi CBK75232x8AC4500Modem Router Combo
SMCD3CM160416x4No WiFiCable Modem
TP-LinkCR190024x8AC1900Modem Router Combo
TP-LinkTC765024x8No WiFiCable Modem
TP-LinkARCHER16x4AC1750Modem Router Combo
TP-LinkTC-762016x4No WiFiCable Modem
TP-LinkARCHER CR50016x4AC1200Modem Router Combo
TP-LinkTC-W79608x4N300Modem Router Combo
TP-LinkTC-76108x4No WiFiCable Modem
Zoom537016x4No WiFiCable Modem
Zoom53458x4No WiFiCable Modem
Zoom53548x4N300Modem Router Combo
Zoom53638x4AC1900Modem Router Combo
Zoom53528x4N300Modem Router Combo
Zoom5341J8x4No WiFiCable Modem

How To Setup A Comcast Xfinity Modem

Xfinity Modem Installation

Setting up your Comcast Xfinity Modem involves the following two steps:

  • Self-installing the modem

Setting up a modem is a straightforward process. Follow these basic steps:

  1. Connect the coax cable to the modem and plug it into a power outlet. Switch on the power.
  2. Allow the modem’s indicator light to stabilize, which typically takes 4-6 minutes. Firmware updates may extend this duration.
  3. Lastly, connect one end of an Ethernet cable to the modem and the other end to your computer or router. Your modem is now successfully set up and ready to use.
  • Activating the modem

Activating your new modem on Xfinity is a simple process facilitated by the Xfinity app. Follow these steps:

  1. Install the Xfinity app and sign up by providing the necessary details like your subscribed plan, name, and password.
  2. If you are an existing primary user, sign in using your Xfinity ID and password.
  3. After logging in, initiate the activation process by selecting your device and clicking on the activate tab.
  4. Connect the coax cable to the modem as instructed, and once powered up, the app will automatically check the connection.
  5. Once the process is complete, the modem will be activated automatically.

Once your modem is activated, it is ready to be used.

Benefits Of Getting Your Own Xfinity Approved Modem

1. No Monthly Rental Fee

One major advantage of purchasing your modem is eliminating the need to pay Comcast’s rental fee, currently at $14 per month or $168 per year.

However, if you are planning to move shortly, it may be more sensible to rent a modem for a few months to avoid compatibility issues in your next location.

Renting offers the benefit of Comcast’s tech support and free replacements. If you are not comfortable with the technical aspects, renting could be a viable option.

Otherwise, buying your modem is generally the better choice in terms of cost-effectiveness.

2. Faster & More Reliable Internet

Opting for a third-party modem often results in faster speeds compared to using the ISP’s modem. While Comcast’s devices are satisfactory, there are generally superior alternatives available.

This disparity becomes particularly evident when selecting top-performing modems.

3. More Control & Features

Despite the inclusion of features like parenting controls and multiple networks, the Xfinity gateway has limitations. For instance, it lacks the ability to prioritize programs or devices.

To gain enhanced control over the device and access more advanced features, opting for a third-party modem or gateway is recommended.

This allows for a greater level of customization and flexibility in managing your network.

Xfinity Modem FAQs

Can I Use My Modem With Xfinity?

Absolutely! Xfinity provides the flexibility to use your modem. However, it’s important to note that there is a limited selection of modems compatible with Xfinity’s internet service.

Before buying, ensure the modem you choose is compatible with Xfinity’s network.

Do I Need To Get A DOCSIS 3.1 Modem?

Xfinity is compatible with modems utilizing DOCSIS 3.0 and 3.1 technologies. Selecting an appropriate modem depends on your subscription plan.

For Gig internet, it is recommended to choose a device equipped with DOCSIS 3.1, 32 x 8 channel bonding, and reliable hardware configuration.

Should I Buy A Modem Router Combo Or Separate Devices? 

Opting for a modem/router combo can be a cost-effective solution to save on rental fees while maintaining satisfactory performance.

However, for gaming or live streaming purposes, it is advisable to invest in a standalone modem and a separate router. This allows for greater customization and optimized performance for specific requirements.

How Does The Xfinity Voice Work?

The VoIP port on the modem serves to convert internet-based voice service from the cable, enabling voice-over IP (VoIP) functionality.

This allows for a seamless connection between the modem and the telephone adapter, facilitating basic telephonic communication over cable internet service. The integration of these components creates a comprehensive unit for VoIP services.

What’s The Best Modem For Xfinity?

The best modem for Xfinity is the Motorola MB8611. This is because it is one of the fastest and most future-proof modems that supports speeds of up to 2500 Mbps.

It also features the latest DOCSIS 3.1 modem technology that ensures you have Gigabit-plus speeds on your connected devices. 

Is It Easy To Setup My Own Xfinity-compatible Modem And How Long Does It Take?

Yes. If you are not accustomed to the process, it will take you around 50 to 60 minutes to install the device.

Then you will need between 10 to 15 minutes to activate the modem and start connecting your devices to the internet.

Here are the steps to set up your modem:

  • Disconnect the modem rented from Xfinity.
  • Plug in your purchased modem, then download the Xfinity app and use it to activate the modem.
  • Connect your laptop or mobile device to the modem and create a network name and password.
  • Return the old modem.

Final Words

Finding a modem that is suitable for your Xfinity connection may be challenging because you need to get a competitive solution that is better than rentals while saving you money and maximizing internet speeds.

Additionally, the device should be in sync with your subscription plan.

The results from our rigorous product testing have resulted in the Motorola MB8611 as our top pick for the best Xfinity compatible modem.

This is due to features such as ultra-fast DOCSIS 3.1 technology which allows you to experience Gigabit-plus speeds on your devices.

Also, the 2.5 GB Ethernet port provides high-speed internet connectivity to even the fastest computers and routers, and from our experience, it delivers upstream speeds of up to 800 Mbps and downward speeds of around 2500 Mbps.

You should refer to the detailed buying guide included in this article to get more information about what you need to consider when buying a modem that is compatible with Comcast Xfinity internet services.

Daniele Besana

Daniele Besana

Daniele is a freelancer consultant with 15 years of experience in network security, customer support, Linux and Salsa. He worked for Juniper Networks in Netherlands, providing support and consultancy on security projects across Europe and Middle-East.

What do you think about this article?

One comment

  1. Really good article! I recently cut the cable and still using xfinity xfi device. Still not sure if I want to replace it at the moment, because my wifes sewing room relies on the pod. I dont want her to loose confidence in this adventure by getting spotty coverage. Need more research about and extension device instead of the pod mesh. Thanks/cp

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