List of 12 Best Suddenlink Compatible Modems [Buy One To End the Monthly Lease]

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Do you dislike the cheap quality or outdated equipment that you get despite paying high monthly equipment rental to Suddenlink cable? Have you finally decided to change it? You must be looking for the best-rated modems or modem/router combo that’s compatible with Suddenlink.

To be able to access internet at high-speeds you don’t just need a high-speed plan, but you also need equipment such as modem and router that can handle such speeds.

The little black box that we so often neglect is, in most cases, is the most crucial bottleneck of your home network. In many ways, it can be thought of as a gateway, and the more sophisticated it is, the better. You can go to Amazon or Best Buy, make a search there and find a lot of compatible devices, but if you’re looking for recommendations from networking experts, then you are at the right place.

12 Best Suddenlink Compatible & Approved Modems

We tested 41 different Suddenlink approved modems and modem/router combos from known brands in various locations after various tests, here’s a list of 12 highly compatible models that work really well. Not only have we listed them, but we’ve also added detailed reviews of each one to help you find the perfect equipment for your networking needs. Shall we begin with the list?

1. Best Compatibility: ASUS CM-32

  • DOCSIS 3.0
  • Downstream/Upstream: 32 / 8
  • Download Speed: Up to 1Gbps / 65Mbps 
  • Modem Router Combo: Yes

The ASUS Modem/Router Combo is an integrated Internet connectivity device. It comes with AC2600 AC performance wireless, with 4 external antennae which allows for a steady signal and sustained speed which is great for gaming or high-performance applications.

It comes with MIMO technology and 4 ports 2.4 GHz and 4 ports 5GHz. The operating frequency is 2.4 GHz to 5 GHz, providing for a wide-ranging frequency range giving clean reception.

The 32 x 8 channels provide on demand connectivity for at least a dozen devices. Sustained download speed of 1 Gbps and upload speed of 65 Mbps makes it ideal for viewing high definition content.

It also incorporates 256 MB Flash storage and 512 MB Ram. It is an easy device to set up, just plug the device in, attach the coaxial cable and go to the service providers site. Enter the relevant account info and the device is up and running.

Always stay connected with 4x Gigabit Ethernet and 2x USB 2.0 ports for your non-Wifi devices like external storage and printers. It also supports Apple Time Machine as an added bonus.

The modem-router combo eliminates the need to plug in multiple devices, and reduces the need for extra peripherals and wires.

  • 2 in one Router and Modem Combo 
  • Options for customization 
  • Good range on 2.4 GHz
  • The GUI sometimes lags
  • Difficulty connecting devices

2. Best Modem Router Combo Compatible with Suddenlink: Arris SurfBoard SBG7580AC

  • DOCSIS 3.0
  • Downstream / Upstream: 32 / 8
  • Download / Upload speeds: 1.4 Gbps / 343 Mbps
  • Modem / Router Combo: Yes

The Arris SurfBoard SBG7580AC incorporates the Docsis 3.0 technology along with an 802.11ac Wi-Fi router with 4 Gigabit Ethernet ports. These are perfect for connecting to things like Smart TVs and gaming consoles, making them a great choice for those into online gaming. It gave a max download speed of 1.4 Gbps and upload of 343 Mbps during our tests.

The wi-fi beamforming feature allows for better connectivity. It also has Mcafee security inbuilt, which provides protection against online threats and gives you peace of mind when browsing the web. The validity of the license is 3 years which is an added bonus.

The modem-router combo with 32 x 8 channels of transfer is easy to set up. All that needs to be done is to connect the cables, coaxial, Ethernet and power. Contact the service provider and activate the service. After that, you just need to configure the wi-fi settings and it’s all ready to go.

With the mobile app parental controls can be set and instant alerts are received if suspicious activity occurs. Thus managing the network is quick and easy.

  • Very easy to set up
  • Built-in router 
  • Comes with 4 Gigabit Ethernet Ports
  • Has issues with signal drop 
  • Modem sometimes reboots itself

3. Best DOCSIS 3.1 Suddenlink Cable Modem: Netgear CM1000

  • Docsis tech: 3.1
  • Downstream / Upstream: 32 / 8
  • Download Speed / Upload Speed: 1Gbps / 500Mbps 
  • Modem / Router Combo: No

The Netgear CM1000 Cable Modem incorporates the latest DOCSIS 3.1 technology, resulting in blazing fast internet speeds. It is compatible with most internet service providers which makes it a versatile product providing your home network with a 32 x 8 channel gateway. It works with all the latest wireless routers.

It has a 1 Gigabit Ethernet port that can be connected to the computer or to a Wi-Fi router. Supports Windows 7, 8,10, Vista, XP, 2000, MacOS, allowing operation within a wide range of operating systems.

Depending on the Internet service provider, it is possible to get download speeds up to 1 Gbps and uploads of 500 Mbps, ensuring reliable Internet speeds for 4K HD streaming and multiplayer games. Setting up is extremely easy and quick. Plug the coaxial cable to the modem, use the Ethernet cable plugged into the computer and follow the onscreen instructions, or call the service provider, and get them to activate.

Suggested Read: Best-rated DOCSIS 3.1 Modems in 2020

  • Easy to set up and activate 
  • Sustained high speeds possible (Upto 1 GB)
  • Works with all routers
  • Speed drops noticeably under certain conditions
  • Not reliable on a long term basis (Device failure rates high)

4. Best for Reliable Performance: Arris Surfboard SBG6950AC2

  • DOCSIS 3.0
  • Downstream / Upstream Channels: 16 / 4
  • Download / Upload Speed: 686 Mbps / 65 Mbps 
  • Modem / Router Combo: Yes

The Arris Surfboard SBG6950AC2 is a 3 in one device – a 16 x 4 channel modem, an AC1900 Dual-band Wi-Fi Router, 4 Port Gigabit Router. It is compatible with Linux, Mac, UNIX, and Windows operating systems; and supports IPv4 and IPv6 Internet browsing systems, making it a versatile product.

  • The Router is a 2.4/5.0 GHz Dual-band Concurrent Wi-Fi router. There are 4 Gigabit Ethernet ports.
  • It incorporates Wi-Fi beamforming allowing for maximum coverage and sustained speeds, even at peak periods.

For protection, the modem-router has McAfee Secure Whole Home Internet, which provides protection and keeps the network secure against malware attacks, etc. The McAfee protection is also subscribed for 3 years which is an added bonus.

The DOCSIS 3.0 platform device is extremely easy to setup and install. It just requires cables to be connected for self-activation from home. The SBG6950AC2 offers a really fast 686 Mbps download and 65 Mbps upload for all your data needs.

It is also backward compatible with DOCSIS 2.0 which makes it work with a wider range of products and services, although it does not support bundled voice services.

The beamforming feature enables the device to be used in homes with more than one floor. The signal is strong enough to cover large areas and the signal strength holds steady.

  • Very Easy Installation 
  • Steady Signal Strength 
  • Large coverage area
  • Becomes hot to the touch after operating for longer periods
  • Self Starter needs some time to work

5. Best for Convenience & Speed: Arris SBG7400AC2 SURFBoard

  • DOCSIS 3.0
  • Downstream / Upstream Channels: 24 / 8
  • Download Speed / Upload Speed: 1Gbps / 300Mbps
  • Modem / Router Combo: Yes

The Arris SBG7400AC2 SURFBoard comes with AC2350 Dual-Band Wi-Fi Router and a 4 Port Gigabit Router, which means it is a compact unit and needs no separate router purchase.

The 24 download and 8 upload channels help maximize the cable internet service providers offer and enable seamless connectivity and performance. The device also supports IPv4 and IPv6 Internet browsing standards making it a versatile product. With superfast 1 Gbps download and 300 Mbps uploads, your movies will never buffer.

The AC2350 2.4 GHz / 5.0 GHz Dual Band Concurrent Wi-Fi Router with beamforming technology gives wide coverage and improved performance to sustain connection speeds even during peak hours. 

Protection from external online risks is protected by the built-in McAfee Secure Whole Internet package, with an App to monitor and configure the settings providing peace of mind.

  • 3 in one device 
  • Easy & convenient setup
  • High speeds Up to 1Gbps
  • Parental controls are difficult to set up
  • Connecting via Ethernet to a service provider sometimes is an issue

6. Best for Top-Tier Speeds & Reliability: Netgear C7000 Nighthawk

  • DOCSIS 3.0
  • Downstream/Upstream: 24/8
  • Download/Upload Speed: Up to 400 Mbps/ 25 Mbps
  • Modem/Router Combo: YES

The Netgear C7000 Nighthawk Cable Modem plus Router allows you to enjoy the services of almost all the cable internet providers. It is also possible to connect the router to a range of smart devices.

During our use, we were able to experience a connection that was reliable enough to do HD streaming and online gaming. It is capable of 400 Mbps downloads and 25 Mbps uploads over 24 x 8 channels of data transfer.

WiFi coverage is another impressive factor. The Docsis 3.0 platform based modem-router boasts of 1800 sq. ft. coverage with its beamforming technology and amplified antennas.

We managed to set up the device quite easily and it actually took just five minutes much as the company advertises. The safety and security features of Netgear C7000 Nighthawk Cable Modem Router covers parental controls as well. In addition to that, it supports both WPA/WPA2 as well as WEP wireless security protocols.

The router has a total of 2 USB ports and 4 gigabit Ethernet ports. This helped us a lot as it was possible to make wired connections to any device. It is quite profitable to use a Netgear C7000 Nighthawk Modem Router than paying a monthly rental fee to your Internet service provider.

  • Easy to install
  • Excellent WiFi coverage
  • Modern design
  • Inconsistent Ethernet response
  • Overheating issues
  • Poor customer service

7. Best for easy installation: TP-Link N300 Wireless

  • DOCSIS 3.0
  • Downstream / Upstream: 8 / 4
  • Download / Upload Speed: Up to 343 Mbps / 143 Mbps
  • Modem / Router Combo: Yes

The installation of the TP-Link N300 wireless cable modem-router combo is quite helpful to eliminate the cable modem rent from your monthly expenses while you get to enjoy other likable benefits as well.

With 8 downstream and 4 upstream channels, the modem router has the ability to provide the user with download speeds up to 343 Mbps and upload speeds up to 143 Mbps. We found that this depends on your cable provider and varies accordingly.

The device features parental controls and we could manage how the connected devices get access to the Internet with ease. There is a Guest network mode as well which enabled us to provide some devices with WiFi access but separate from the main network.

While testing the TP-Link N300, we used a number of Internet service providers (ISP) like Cox, Spectrum, Comcast, etc. and realized that it is compatible with almost all major ISPs. It supports Docsis 3.0 technology and is reliable.

The device has one USB port and four Gigabit Ethernet ports which ensures that reliable connections can be made with your other devices with no trouble at all.

  • Very user-friendly
  • Two-year warranty along with 24/7 technical support
  • Easy Guest network configuration
  • Unable to set up static IPs on devices
  • Cannot configure the firewall properly
  • Heavy browsing causes the signal to drop

8. Best for Smooth WiFi: Netgear C3000 N300 (2 in 1)

  • Docsis Tech: 3.0
  • Downstream / Upstream: 8 / 4
  • Download / Upload Speed: Both up to 300Mbps
  • Modem / Router Combo: Yes

The Netgear C3000 N300 WiFi Cable Modem Router 2 in 1 is compatible with many major Internet service providers including Spectrum, Cox, Xfinity from Comcast and several others. With DOCSIS 3.0, you get to enjoy better speeds.

The Docsis 3.0 compliant C3000 is built for HD streaming and online gaming and our test results proved that the modem router is able to achieve 300 Mbps both for upload and download. For a medium-sized home, it works quite effectively as we did not face any problems with regard to the range. 8 x 4 channels is more than sufficient to support several streaming devices.

The Netgear C3000 is super easy to install and can be connected to any kind of device. We found that the Netgear Genie app which acts as a personal dashboard helps a lot to monitor the home network. It is very comfortable to use as well with push buttons and power savings features.

We also discovered that it is quite profitable to invest in one of these modem routers than paying the monthly fee your cable provider demands.

  • Reliable connection
  • Good connectivity
  • Minimized chance of facing compatibility problems
  • Quick and easy installation
  • Cannot connect to a VPN
  • No guarantee for durability
  • Customer service is not satisfactory
  • Tricky parental controls

9. Best for Low Bandwidth Home Network: Arris SurfBoard SBG6580

  • Docsis Tech: 3.0
  • Downstream / Upstream: 8 / 4
  • Download / Upload Speed: 343Mbps / 131Mbps
  • Modem/Router Combo: Yes

The Arris SurfBoard SBG6580 Cable Modem and Wi-Fi N600 Router is compatible with most Internet service providers with cable internet service of plans up to 100 Mbps. During our tests, we found that the device works well with Comcast Xfinity, Cox, and Cablevision, while Verizon and AT&T showed incompatibility.

The router has 8 download channels and 4 upload channels and the download and upload speeds can reach up to 343 Mbps and 131 Mbps respectively. We were quite happy with the fact that anyone can easily figure out how to use the device.

Buying a modem-router combo is a wise choice in our opinion as this cancels out the monthly rental fees and hence profits the user. The Arris SURFboard SBG6580 Cable Modem and Wi-Fi N600 Router is perfect to enjoy data and multimedia services at home. It effectively allows high-bandwidth home networking.

The Docsis tech 3.0 based device has 4 Gigabit Ethernet Ports and an advanced firewall. The assured tech support by Arris and guaranteed 2-year limited warranty boost the quality of this modem-router combo.

  • Dual-band frequency available (2.4GHz/ 5.0 GHz)
  • Easy to configure
  • Good customer service and assured warranty
  • Connectivity issues
  • Less clarity over safety protocols
  • Consistent use leads to overheating

10. Cheapest Modem/Router Combo for Suddenlink Arris SurfBoard SB6121

  • Docsis Tech: 3.0
  • Downstream / Upstream: 4 / 4
  • Download / Upload Speed: 172Mbps / 132Mbps
  • Modem / Router Combo: Yes

The Arris SurfBoard SB6121 is a Docsis 3.0 based modem-router combo. The model has different options for speed and channel if you are willing to pay more but even the minimum option one has amazing speed. It easily hits the 172 Mbps and 132 Mbps download and upload speed limit and even surpasses it. Of course, it is still somewhat dependent on your ISP.

While we weren’t particularly bothered by the blue LED indicator lights, some users have complained about it before. We have also noticed some dissatisfaction with the signal. What we noticed is that the modem takes better to new wiring. The wifi signal is overall strong and the 4 x 4 channel bonding is stable.

The setup and installation process isn’t much of a problem. As long as you understand where to plug in what, you should be alright. The manual does a good job of explaining the initial steps as well. However, it doesn’t really go more in-depth than that. So, if you’re not a tech expert who wanted to tinker with the channel and speed a little, you will need outside help.

  • Comes with 4 Ethernet ports
  • Easy setup
  • Truly incredible speed
  • Bright LED lights that can annoy the user
  • Old wiring can mess up the signal
  • Isn’t user-friendly for people who don’t understand tech

11. Arris Touchstone TM722G

  • Docsis Tech: 3.0
  • Downstream / Upstream: 4 / 4
  • Download / Upload Speed: 343Mbps / 150Mbps
  • Modem / Router Combo: No

If you are in the market for a modem alone, you would like the Arris Touchstone TM722G which uses the Docsis 3.0 platform.

The speed of 343 Mbps for download and 150 Mbps for upload is genuinely fast. Not to mention 4 x 4 channels that give sustained connection without disconnection. It is definitely ahead of its counterparts in the market.

While it is compatible with most cable providers, we all know Comcast is a popular choice. It really does work well with Comcast. As we said, the speed is excellent. However, setting it up can be quite a long process. The modem doesn’t come with the option for you to set it up on your own. You will have to stay online with the tech guys from Comcast for some period of time before your modem can be activated.

Now, while we didn’t have much of a problem with the system, popular customer review suggests a lot of people had to wait for a long time to get the connection right.

Other than that, the modem itself is as good as the claim. It’s accurate more than anything. Compared to the previous modem for Arris, this is significantly better.

  • Compatible with major cable providers
  • Quite on the inexpensive side
  • Speed is definitely good
  • You will need good wiring
  • Setting it up with Comcast isn’t easy
  • Might lose connection once in a while

12. Cheapest Suddenlink Compatible Cable Modem: Netgear CMD31T

  • Docsis Tech: 3.0
  • Downstream / Upstream: 4 / 4
  • Download / Upload Speed: 150Mbps / 150Mbps
  • Modem / Router Combo: No

If you are looking for an affordable modem, then the Netgear CMD31T would be a likely candidate for your purchase.

The modem has a steady upload and download speed of 150 Mbps. It is surprisingly fast. We have tested the speed by streaming and downloading a couple of videos and it seems to do everything without any lag.

Installing the modem isn’t much of a problem. You just have to send the numbers to your ISP so they can activate it and on your end, you have to plug it all in the right way. However, it’s impossible to decipher how easy the installation is because of how bad the instruction guide is. It doesn’t do a good job of explaining anything and whether you understand tech or not, it will get you confused.

As of now, the modem doesn’t have a built-in router. So, if you need an internet connection with wifi in your home, this one isn’t for you. The Netgear CMD31T uses Docsis 3.0 technology and has 4 x 4 channel bonding allowing fast transfer of data.

Further, we were quite happy with the price range. If we compare to the counterparts in the market, this one offers more range than the others.

  • Definite easy installation process
  • Small, compact model
  • Price is decent
  • Disconnects from time to time
  • Doesn’t have a wifi or router option
  • Manual isn’t helpful

Suddenlink Compatible Modems: The FAQs

If the budget was not a concern, which would you advise?

Without any hesitation, we would ask you to buy the ASUS CM-32. It is priced at $200 but packed with the latest features and has a very powerful Wifi router. In fact, it does not cost more than a modem and a separate high-quality Wifi router.
On the other hand, you get the convenience of an all in one device that is capable of 1.3 Mbps downloads and sending data uniformly through your home to every device.

Which is a no-frills device for Suddenlink that you suggest?

The Netgear CMD31T is simple but packs a punch. This modem is priced well below $50 but allows smooth 150 Mbps downloads. Don’t sneer because that is enough speed to stream not one but four UHD films at the same time. We tested it for many days and found it to be an aesthetically pleasing, affordable, and capable device.

I want a not very pricey top of the line modem and Wifi combo. Which should I go for?

The Arris SURFboard SBG6580 works on the DOCSIS 3.0 platform that was capable of sustaining well over 100 Mbps during our rigorous testing. It has four Ethernet ports and a dual-band Wifi that takes care of most homes with 3-5 rooms (a distance of 100 ft).

I want a stylish and capable router with no ugly looking antennas.  What do you suggest?

The Netgear C7000 Nighthawk has no external antennas and is capable of AC1900 Wifi. It is certified by the manufacturer for 400 Mbps speed, and we verified it. Powered by internal antennas, the router is capable of transmitting across a medium-sized home without any lag.

Is there a DOCSIS 3.1 modem in your line up?

The Netgear CM1000 is capable of 1000 Mbps+ downloads and is priced attractively at $124. The Genie app is brilliant and allows you complete control over your device by logging in through a browser.


The Arris SBG7400AC2 was our unanimous top choice. Priced quite low, it has McAfee anti-malware protection and looks good in matte black with pale blue LEDs. It offers beamforming that focuses the Wifi signal towards a device instead of spreading it omnidirectionally. There are plenty of Ethernet ports and one USB that allows you to connect in a wired network.

The runner up was the Netgear C3000 modem router. With N300 Wifi, it can support up to 300 Megabits/sec, which is more than enough for most families. There is the innovative AirPrint feature allowing you to print directly from any iOS device and a smart home network manager with an intuitive interface.

Other Modem & Wireless Router Guides on Freedom 251:

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2 thoughts on “List of 12 Best Suddenlink Compatible Modems [Buy One To End the Monthly Lease]”

    • I have the same problem I can’t find one with voice. Would you please email me if you find one. I would be happy to return the favor. Thank you


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