5 Best Modem Router Combo for Comcast Xfinity Cable Internet in 2021

While looking for a modem and a router, most people always ask, “Do you have to use the internet connection equipment for your home that the Internet Service Provider (ISP) gives you? The simple answer is No! you can get the best modem router combo for Comcast Xfinity and other ISPs as per these reviews.

Since Comcast has the largest share in both cable TV and broadband cable internet in the US, it is good to consider them for your internet connection. However, you may decide to pick your own router and modem or a combo instead of depending on the ISP-provided one if it is not reliable or offer you an excellent internet connection.

In the article, we will discuss the best modem and router combo for the Comcast Xfinity internet connection. In addition, we will give you tips on how to choose the best modem router combo from the Comcast compatible modem router list.

If you have a separate modem, you can consider the best router for Comcast high-speed internet (Xfinity) to make your home the best when it comes to internet provision.

One of the reasons for buying your own modem, router, or combo is to avoid the monthly rental fee. Quick math will tell you that the monthly fee for one year is equivalent to a brand new modem & router combo.

What is the best modem & router combo for Comcast Xfinity?

You will find that most of the best modem router combos described in this article are also the best for most networks. The full review of the best modem router combo is can be accessed here.

Modem/router comboBest forSpecificationsCheck it on Amazon
Netgear CBK40Best Comcast modem & router comboDOCSIS: 3.0,
Tri-band Wi-Fi router,
Speed: Up to 2.2Mbps,
DOCSIS channels: 32×8
Ports: 6 Gigabit,
Range: over 4,000 sq. feet
Netgear C7800Best Comcast Modem router combo for 1GbpsDOCSIS 3.1,
Plans Up to 2 Gigabits,
AC3200 dual-band router,
32×8 channel bonding,
4 Gigabit Ethernet ports,
2 USB 3.0 ports
Motorolla MG7700Best Comcast compact combo DOCSIS 3.0,
Dual-Band WiFi router,
Plans up to 600 Mbps,
Speed: Up to 1900Mbps,
4 Gigabit Ethernet ports,
DOCSIS channels: 24 x 8
Arris SurfBoard SBG10Best Comcast budget ComboDOCSIS 3.0,
Dual-Band WiFi router,
Plans up to 400 Mbps,
Speed: Up to 1600Mbps,
2 Gigabit Ethernet ports,
DOCSIS channels: 16 x 4
Asus CM-32 AC2600 Combo modemBest modem/ router for up to 400MbpsDOCSIS 3.0,
32×8 Cable Modem,
AC2600 dual-band Router,
32×8 channel bonding,
4 gigabit Ethernet ports,
2 USB ports

The best modem and router combo for Comcast Xfinity cable internet

Netgear CBK40 modem router combo

Netgear CBK40: Best Modem Router Combo for Comcast Xfinity Cable Internet

Looking for the best modem router for Comcast Xfinity? Then look no further! Price aside, the Netgear Orbi CBK40 gives you a Wi-Fi speed performance, range, and connection to multiple devices to give you a device to marvel at.

The Orbi CBK40 is an excellent solution for those who want to extend their Wi-Fi coverage. It comes in two units: The first (model CBR40), which is the cable gateway, and another Satellite Extender Unit model RBS20. You use your modem/router combo box together as one unit so that it may connect you over an internet connection while also providing more range with its extenders!

This modem is recommended for Comcast Xfinity internet plans of up to 600Mbps. Thus the Orbi CBK40 is a great way to get better Internet speeds without having any of the limitations that come with traditional DSL or cable modems. It supports up to 600Mbps for increased bandwidth, so you can stream music in HD and enjoy smooth video chat sessions on Skype!

It offers the most advanced technology in Wi-Fi provision. The following are the reasons why you should buy Netgear Orbi CBK40.

Features of Netgear Orbi CBK40?

  • This gadget gives you Mesh-WiFi connectivity which is seamless. Since the device is a mesh, it can give you internet connectivity for a range of up to 4,000 square feet.
  • The device can cover large homes with WiFi thus leaving no dead spots.
  • Netgear CBK40 can provide WiFi speeds of up to 2.2Gbps. This is because it comes with the Tri-band technology that maintains fast internet in all corners of your house.
  • Using the Orbi app, Netgear CBK40 is very easy to set up and manage.
  • It also comes with advanced security and parental controls thus making it safe and secure for your family to access WiFi.
  • This combo device is Alexa and Google assistant enabled to enable voice commands.
  • It is aesthetically beautiful to have the Netgear CBK40 in your living area or office.

What makes the Netgear Orbi40 stand out for Xfinity?

The Orbi CBK40 modem router offers all of the same features as its larger brother Orbi RBK40 router but without four LAN ports on the satellites. Moreover, it can still handle a hefty amount of traffic with ease thanks to AC2200 Wi-Fi bandwidth (plus 4 gigabit LAN ports on the gateway) and two satellites for coverage around your home or office!

One of the most notable features of Orbi CBK40 is its ability to connect with other devices wirelessly through Wi-Fi. It also has a responsive, modern web interface that allows for easier navigation than in older Netgear routers released commercially years ago!

“Responsive” means it will change depending on your screen size; while others have clunky interfaces due to their lack of responsiveness. Thus, they cannot adapt easily when larger screens come into play (like tablets or smartphones). This Orbi CBK40 does an excellent job at adapting–which makes using them much more enjoyable.

It also has all of the features you need for your home network, with more included in this one package! For example, you can use the web interface to change the standard router settings and can also set up CBk40 as your VPN server. You can also integrate Google Assistant or Alexa voice command.

Netgear Orbi CBK40 installation

Setting up the Orbi CBK40 is so easy that you will be impressed! You can either use the Netgear Orbi app or the web user interface.

First, plug in your Wi-Fi router and wait for it to power on. Then position both satellite units next to each other with rings at their base glowing brightly (the color corresponds). Therefore, press down sync buttons located on the backside of each device by using a ring-shaped LED light top as guidance while aligning them correctly into place.

You can know the status of the sync between the gateway and the satellites using the indicator light. Below is the interpretation:

  • Blue: The two have synced successfully. This indicates that you have a connection between the gateway and the satellite. Thus the connection is good.
  • Amber: This color shows a successful connection of the Orbi gateway and the satellite but the connection is fair. Thus, you need to move the satellite nearer to the gateway.
  • Magenta: This Shows that there is no syncing between the Orbi gateway and satellite. In this case, you need to move the satellite nearer to the router and restart the sync process.

Once everything threads together securely without moving around too much once complete set time setting password or IP address. Then move on to Netgear Orbi app installation from either Google Play Store OR Apple App store depending upon preference.


  • The Xfinity internet modem router has a great range
  • It is easy to set up
  • Offers tri-band router technology
  • It works with all Orbi satellite units, including RBW30RBS40, or RBS50
  • Connects several devices
  • Has advanced parental controls

What are the cons of Netgear Orbi CBK40?

  • Uses 2×2 Wi-Fi specifications with speed cap at 867Mbps
  • No WAN port, no telephony capability
  • Its costly


The Orbi CBK40 is a great choice for homes and businesses that need reliable internet. The tri-band system has an easy installation process, works well in our throughput testing because of its dedicated backhaul band which doesn’t have any signal loss due to other channels being used by individual users at once (like routers). In our tests, the satellites could be placed up to 75 feet away for exceptional range. 

Moreover, it has a responsive web user interface with cool features like Whole Home WiFi Optimization technology – all while providing you stable connections throughout your home or office! Finally, you can easily set it up using the web interface or the effective Netgear Orbi app.

We could get the best connection for our 600Mbps internet subscription in our office. We got the boost needed for things like HD streaming and downloading large files without any hiccups in speed or quality!

Netgear C7800 Modem/ Router Combo

Netgear Nighthawk C7800 modem/ router combo: Best DOCSIS 3.1 modem router combo for live streaming

This modem/ router combo is approved by Comcast (Xfinity) for internet speed plans of up to 1Gbps, their highest tier as per their specifications. The device theoretically can support internet speeds of up to 2000Mbps.

Netgear C7800 is the ultimate gaming, surfing, and streaming machine. With its 3.2Gbps combined Wi-Fi speed for extreme gameplays without ever getting a signal drop or delay this wireless router provides cutting-edge performance in an affordable package that can be used by anyone!

It also saves you money because instead of buying two separate devices (a cable modem/router combo), one will do just fine – saving lots on costs too so get yours now before these limited quantities run out!!

This is one of the best modem router combos since it can provide fast Wi-Fi speeds for a range of up to 3000 square feet. This means it can provide internet for a medium to large home without the need for a Wi-Fi extender.

Netgear C7800 offers a variety of security features to protect you from the online world. The double firewall protection (SPI and NAT), Denial-of-service attack prevention, Wi-Fi protected access with WPA/WPA2 – PSK encryption is all included in this high-end modem router!

In case you want to provide internet access for your guest’s device on the same network as yours then this router allows a separate secure Guest Network feature that ensures none of the data is being monitored by someone else other than yourself!

Netgear C7800 features

  • The Netgear Nighthawk C7800 comes with a built-in DOCSIS 3.1 cable modem. The modem helps to communicate with the ISP while also having a router for your Wi-Fi connection.
  • The combo thus achieves the fastest broadband internet speeds. For Comcast (Xfinity) it is recommended for a package speed of up to 1Gbps. DOCSIS 3.0 can only achieve speeds of up to 600Mbps internet speeds.
  • This device is easy to set up like other Netgear routers or combo devices.
  • In addition, Netgear Nighthawk C7800 can support up to 45 devices. Thus, you can connect all the WiFi devices in your home or office. 
  • Buying your own Netgear Nighthawk C7800 will save you so much in rental fees since it is used for the high internet speed package.
  • Because of the fast internet speeds, 2USB ports, a Gigabit wired switch, and connectivity to many devices across a wide area, this combo will provide lag-free internet for gaming, surfing, and streaming.

What makes Netgear C7800 stand out?

The Netgear C7800 is a router that can give you the fastest WiFi speeds possible. With its 3 gigabit Ethernet ports, it’s perfect for gamers and streaming services alike! The benefits don’t stop there; being able to use less equipment because of this amazing device also means lower costs when purchasing other necessary devices like cable modems or dailies from your provider as well.

Moreover, being a modem router combo, it saves on space and you will have fewer cables in your home.

The C7800 dual-processor ensures a blazing-fast lag-free Wi-Fi experience. Its powerful 1.5GHz and 128MB flash memory mean fast wired, wireless, or WAN to LAN speed with next-generation WiFi at Gigabit speeds.

This is thanks to its 4 x 4 transmitters/receivers on channel 2.4 GHz as well as 5 GHz which makes it ideal for large homes looking forward to upgrading their network connection in today’s tech-savvy world.

Comparison with other Xfinity modem routers

The device uses DOCSIS 3.1, which offers speeds up to 10Gbps downstream and 1Gbps upstream – about ten times faster than its predecessor DOCSIS 3.0 used in the Orbi CBK40 above.

In theory, using DOCSIS 3.1, this device can support data rates up to 10Gbps downstream and 1Mbps upstream for ISPs who want more room in their network upgrade plans or future innovations like virtual reality streaming without interruption! The 2 DOCSIS 3.1 OFDM downstream channels and 2 more for upstream makes it excellent.

Moreover, Netgear C7800 features beamforming technology to ensure your devices get the best signals. This is unlike blanket signals in non-beamforming gateways.

You can now control your C7800 remotely from anywhere with the Netgear Genie App. Download it onto any tablet or smartphone device, so that you are able to monitor and diagnose issues on the go! You will have all of this power in one hand no matter where life throws its curveballs – home network management has never been easier than this!


  • Excellent performance
  • Connects multiple devices and can stream multiple HD-quality videos
  • Will eliminate Comcast Xfinity modem router rental fees
  • Technologically advanced
  • Can access to parental controls to enable website filtering
  • Blazing fast internet speed
  • Can cover a Large home
  • It is excellent for Gaming
  • Has reset button and On/Off power button

What are the cons for Netgear Nighthawk C7800?

  • It is a bit expensive


The Netgear C7800 is an excellent modem router for Comcast Xfinity that can support data rates up to 10Gbps, 802.11ac 3200Mbps router with three Gigabit Ethernet ports, and two USB3 .0 Ports for fast wired connections. Moreover, it also features remote access through the Netgear Genie app so you don’t have to do anything but connect your device! Furthermore, it has four fixed high-performance active antennae that will provide you long-range coverage. With its powerful 1.5GHz dual-processor this huge bad boy will be able to handle whatever comes across those networks in no time at all.

Motorola MG7700 Cable Modem Combo

Motorola MG7700 modem router combo: The best modem router combo for Optimum and Comcast Xfinity

This device is well known for its aesthetic appearance and its compact nature. It thus means that it can be placed on a shelf in the living room and blend well in your house or office.

It has both the DOCSIS3.0 24X8 channel bonding cable modem and the AC1900 Dual-band router. The combination ensures that you get fast internet in your house or office.

This device has 4 Gigabit Ethernet ports to connect the devices that have no WiFi connection. This means devices like printers, gaming consoles, and some personal computers among others.

It also has a power boost WiFi amplifiers and beamforming technology. The technology enables the combo to provide stable long-range WiFi in your home. It can also support WiFi speeds of up to 1000Mbps.

Comcast (Xfinity) recommends Motorola MG7700 Cable Modem Combo for internet speeds of up to 400Mbps.

This router comes with a 2-year warranty. This means that the company believes that the product will work for you for long.


  • Compact in nature
  • Excellent internet speeds
  • Has 4 Gigabit Ethernet ports
  • Gives you a 2 year warranty


  • Does not support Gigabit internet plans

Arris SurfBoard SBG10 Modem router Combo

Arris Surfboard SBG10 Modem router combo: The best modem router combo supported by Xfinity

This modem router combo combines the DOCSIS3.0 cable modem and an AC1600 Dual-band router to ensure you get fast WiFi internet. It also comes with 2 Gigabit Ethernet ports to ensure all your devices are connected even non-WiFi devices.

The device is recommended for a Comcast internet plan of up to 250Mbps. This gives you a fast connection for everyday use in your house.

The device is compatible with most cable internet providers thus making sure that you can use the combo even when you change from Comcast Xfinity to either Cox, Spectrum, and other cable internet providers.

Arris Surfboard SBG10 combo is easy to set up and manage using the Surfboard manager app. The setup is done by 3 easy steps of connecting the coaxial cable, getting activated by your ISP, and setting the device using the app.

The modem router supported by Xfinity also comes at a very manageable price as compared to other combos.


  • Has gigabit Ethernet ports
  • Compatible with most ISPs
  • Is cost effective
  • Great connection speeds


  • The Wi-Fi range is not as long as compared to the other modem router combo discussed in this review.
  • There are several reported cases of internet dropping a few times in a week which is not good for smart devices used in our homes.

Asus CM-32 AC2600 Combo modem

Asus CM-32 AC2600 Combo modem

This is one of the best modem and router combos for Xfinity. We have offered product reviews for this device here. However, we will give the highlights of the product. These are as follows:

Reasons to buy Asus CM-32 AC2600 Combo modem

  • The modem has a built-in DOCSIS 3.0 cable modem having 32X8 channel bonding in addition to WiFi AC 2600 router to give you full bandwidth.
  • Asus CM-32 AC2600 Combo modem can support WiFi speeds of up to 1.3Gbps. Comcast however, has approved the device for internet speeds of up to 600Mbps.
  • Due to the device having 4 antennas, it is able to provide a long-range and stable WiFi connection.
  • The device also comes with 4 Ethernet ports and 2 USB ports. These ports help to connect other non-WiFi devices to the combo.
  • Asus CM-32 AC2600 is IPV6 enabled.
  • Setting up this device is just a breeze.

What are the reasons for not buying this device?

  • Some users have reported problems in updating the Firmware. For those users, the device may get some bugs that make it to stop working until the firmware is updated.
  • The customer service from Asus does not provide live chat which means you have to send emails that take longer to be responded to.

Factors to consider when buying a modem router combo

There are several factors to consider when buying a modem and router combo. This is because there are several modem routers in the Comcast compatible modem router list to choose from. You may also decide to go for a separate modem and router.

Is the device in the Comcast (Xfinity) compatible modem router approved list?

The devices reviewed above are all on the Xfinity-approved list. There are also other approved modem and router combos. However, we reviewed the devices according to your budget and specifications.

From the Comcast compatible modem router list, we made tests on several devices to come up with the best. Therefore, choosing one of the modem routers reviewed in this article will ensure you get the best performance for your home or office.

What is your budget?

There are several Comcast Xfinity-approved modem router combos. However, they all come at different prices with different features. However, the cost of buying a good modem router combo is cheaper than getting separate devices.

How many devices do you have?

Different modem router combo that works with Comcast support a different number of devices. The number of devices should be checked for both Ethernet ports and also Wi-Fi-supported devices.

The best modem and wireless router for Xfinity should be able to support all the devices in your home. This is both for the current devices and future devices if you have plans to buy them already.

What is your Comcast (Xfinity) internet plan?

Xfinity has different tiers of internet connection ranging from lows of less than 100Mbps to highs of 1000Mbps. These tiers are supported by different devices. Therefore it is important to get a modem router combo that is approved for your internet plan by Comcast.

You can use the reviews in this article to choose a modem router from the Comcast compatible list that will serve your internet plan maximumly.

What range of Wi-Fi connections do you want?

There are different modem router combos as described up there that are approved for Xfinity internet. These devices support stable and fast WiFi speeds for ranges ranging from a few square feet to as high as 4500 square feet. Therefore it is good to check the range that you want to cover with the internet.

What security and parental control features do you want?

All the modem router combos that work with Comcast come with some level of security and parental controls. However, the levels depend on the brand and model. Some brands are well known for excellent features in security and parental controls as compared to others.

WiFi routers that work with Comcast have different parental controls. In case you want an add-on parental control, you can check the reviews of the best parental control routers and add-ons.

Is Xfinity internet good?

Xfinity Internet is good for gaming, streaming, downloading, and other services. It offers several budget-friendly bundles to make sure that your monthly costs stay under control while still getting access to all of Xfinity’s great features! Moreover, fast connections with superfast download speed up to 1000Mbps (more than most people will ever need) at affordable prices; best in class customer support 24/7 via phone or online chat plus no long-term contracts required either which means more cash left over after paying for.

Is Comcast and Xfinity the same?

Comcast, a major cable provider in America with over 30 million customers will be changing their internet product name. Instead of being called Comcast, consumers can now buy products under an exciting new brand named “XFINITY.” The company wants us all to know that they’re not just your average TV service providers – instead, this innovative leader provides you access to exceptional WiFi connections at home AND on the go!

What is Xfinity’s internet speed?

Xfinity offers different packages that come at different prices and internet speeds. The internet speed range from 100 Mbps to Gigabit internet plans. Thus you can select a package that suits your needs and budget. The cost ranges from $34.99/mo for the 100Mbps download (5Mbps upload) plan and $84.99/mo for the 1200Mbps download (35Mbps) plan.

Is Xfinity really that bad?

The American Customer Satisfaction Index, which conducts thousands of customer surveys annually and ranks them according to overall satisfaction with various companies in America every year (including providers), has found that Comcast is Fifth-best among all twelve networks they surveyed but below average nationwide. It’s not all bad news though! Some reviewers say their service improves after installation or maintenance by an expert technician who knows what he/she’s doing because then you don’t have any downtime whatsoever while others appreciate this type of care very much as well – just be aware before hiring someone else if your needs aren’t too

The final word

Comcast is one of the biggest internet service providers in the country. Getting the best modem router combo for Comcast Xfinity internet should be every person’s priority.

Of note is that these devices work with most of the other ISPs. You can check the best modem router combos for all ISPs or you can compare with the best modem router combos for spectrum internet when buying one.

Buying your own modem router combo ensures that you get the best device and also helps to save on rental fees in the long run. One disadvantage with the Combo devices, it is hard to replace either the modem or router since they are not separated. Therefore in case, it gets damaged or you want to upgrade you have to replace the whole unit. 

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