9 Best Suddenlink Compatible Modems Reviews

If you are a Suddenlink internet customer and want the best performance possible, investing in a compatible modem is important.

With so many different modems to choose from, it can be overwhelming to find the right one. That’s why we’ve created this guide to help you find the best Suddenlink-compatible modems.

Our key considerations while analyzing products were DOCSIS version, number of channels, speed, and design. You can find detailed information on these factors in our “Buying Guide”.

In addition to that, we have also reviewed the best Suddenlink compatible modems below for your reference. 

Best Suddenlink Compatible Modems List

Best Suddenlink Compatible Modems Reviews

1. NETGEAR CAX80 Suddenlink Modem

NETGEAR CAX80 Suddenlink ModemThe first product on our list is from a famous brand called NETGEAR. Their CAX80 modem is the right option for people seeking a high-performance networking device capable of supporting multiple devices and delivering rapid internet speeds.

This modem is compatible with major cable internet providers such as Spectrum, Cox, and Xfinity. However, it is unsuitable for AT&T, DSL providers, Verizon, and any bundled voice service. It is designed for cable provider plans up to 6Gbps, and offers fast WiFi 6 performance, covering up to 3,000 sq. ft. wirelessly, with dual-band WiFi 6 (AX6000) speed (up to 6Gbps).

It also features versatile connections, including one 2.5 Gigabit Ethernet port, 4 Gigabit Ethernet ports, and one USB 3.0 port, providing fast wired connections to computers, printers, game boxes, storage drives, and other devices. It uses DOCSIS 3.1 modem technology and 32×8 channel bonding.

As it is compatible with Amazon Alexa and Google Assistant, it enables voice control, allowing for effortless network management, guest WiFi network setup, and internet access pause for specific devices.

This modem supports WPA/WPA2 wireless security protocols to ensure safe and secure internet usage. It comes with a 1-year warranty and a 30-day free trial of NETGEAR Armor, which provides automatic security protection for all connected devices in your home.

User Experience: The overall feedback for this product was mostly positive. The features that impressed the consumers were built-in compatibility with Amazon Alexa and Google Assistant, 2-port aggregation capability, WiFi 6 performance, and versatile connections. However, some of them felt that the customer support was below average.

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2. ARRIS S33 Suddenlink Modem

ARRIS S33 Suddenlink ModemThe next product on our list is the ARRIS Surfboard S33, a combination of superior connectivity and faster streaming. This modem is built with advanced DOCSIS 3.1 technology, 10 times faster than DOCSIS 3.0, ensuring reduced gaming lag, better security, and the ability to run multi-gig networking.

The modem is compatible with most U.S. cable internet service providers, including Cox, Spectrum, and Xfinity, and it is approved for cable internet speed plans up to 2.5 Gbps. With the Surfboard Central App, the modem’s setup is simple and secure, and you can easily activate the modem and connect it to a Wi-Fi router for networking.

It features a simple LED indicator system that displays the status of the modem and the internet connection. The modem also has four Gigabit Ethernet ports, connecting multiple wired devices such as desktop computers, gaming consoles, and network-attached storage (NAS) devices.

Another unique feature of the ARRIS Surfboard S33 is its compatibility with the ARRIS HomeAssure App, which allows you to manage your network from your smartphone or tablet easily. The app features advanced capabilities such as parental controls, guest Wi-Fi networks, and network performance monitoring, providing full control over your network.

Setting up the ARRIS Surfboard S33 is a breeze and works with most cable internet service providers. It has a 2-year limited warranty, Live chat, and phone support.

User Experience: Consumers of this product were thrilled with this purchase. According to them, setting up the modem was easy and compatible with my internet service provider right out of the box. But it does not come with an in-built Wi-Fi router.

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3. NETGEAR C7800 Suddenlink Modem

NETGEAR C7800 Suddenlink ModemNETGEAR Nighthawk Cable AC3200 Modem Wi-Fi Router Combo is a top-performing networking device that delivers fast and reliable internet connectivity. It is compatible with major cable internet providers and can provide internet speeds of up to 1Gbps, although it is currently certified with Spectrum, Cox (up to 1Gbps), and Xfinity (up to 800Mbps).

One of the most significant benefits of this product is the ability to save money on rental fees as it replaces your cable modem and Wi-Fi router. It is estimated to save up to $168 per year in equipment rental fees.

With AC3200 speed, this modem covers up to 3000 square feet and can connect to 45 devices simultaneously. It has four Gigabit Ethernet ports and two high-speed USB 3.0 ports for fast-wired connections to devices such as computers, printers, and game consoles.

The modem technology is engineered with 32×8 channel bonding and DOCSIS 3.1, enabling up to 3200Mbps wireless speed, making it ideal for heavy-duty activities such as 4K HD streaming and multiplayer gaming.

The dual-band selection feature minimizes interference and maximizes speed for multiple smart wireless devices in your home. Plus, with amplified antennas and Beamforming+ technology, the ARRIS Surfboard C7800 offers far-reaching Wi-Fi coverage. This modem is compatible with Amazon Alexa and Google Assistant, making it easy to manage your network with voice control. You can set up guest Wi-Fi networks, pause internet access for specific devices, and more with just your voice.

User Experience: This modem is an absolute favorite option among several consumers. The set was easy, and the built-in Wi-Fi ensured great home coverage. The only complaint was that the modem could get overheated during extended use, which was a major concern for some users.

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4. ARRIS SB6190 Suddenlink Modem

ARRIS SB6190 Suddenlink ModemThe ARRIS SURFboard SB6190 DOCSIS 3.0 Cable Modem is a reliable and affordable device that can improve your home network’s performance, making streaming and downloading faster and more efficient. As a trusted brand with a record of selling over 260 million modems, you can trust the quality and durability of this product.

This modem uses DOCSIS 3.0 technology, which is widely available and delivers high-speed internet to your devices. Setting up the modem is easy and secure. Just plug it in, download the SURFboard Central App, and follow the instructions to activate the device. You can also connect the modem to a Wi-Fi router for networking.

The SURFboard SB6190 is compatible with most major U.S. cable internet providers, including Cox, Spectrum, and Xfinity. It can support cable internet speed plans up to 800 Mbps, but it is important to check with your ISP to confirm compatibility.

You will receive an ARRIS SURFboard SB6190 Cable Modem, power supply, quick-start guide, and 2-year warranty card when you purchase this modem. It also features one 1-Gigabit ethernet port, connecting you to a Wi-Fi router or other wired device.

User Experience: According to the user reviews, though this modem has many great features, it is important to note that it only supports DOCSIS 3.0 technology, which may not be the fastest option available. Additionally, it only has one ethernet port, which may not be sufficient for users connecting multiple wired devices.

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5. Motorola MB7621 Suddenlink Modem

Motorola MB7621 Suddenlink ModemMB7621 modem is an excellent choice for those who require internet speeds up to 650 Mbps, and several industry experts have recommended it as the best modem for most people. It is equipped with a Full-Band Capture Digital Tuner, so this cable modem ensures a more reliable and speedy internet connection.

With a 1 Gigabit Ethernet port, this modem can be easily connected to a Wi-Fi router, computer, HDTV, game station, or streaming video device. It is perfect for Whole Home Wi-Fi or Mesh networks like Google Wi-Fi and Orbi. It is important to note that the MB7621 has no built-in wireless router or telephone call capability, unlike the Motorola MG7315, MG7540, MG7550, and MG7700, which have a built-in wireless router.

The MB7621 is compatible with Comcast Xfinity and Xfinity X1, Cox, Charter Spectrum, Time Warner Cable, BrightHouse, CableOne, SuddenLink, RCN, and other cable service providers. However, it is essential to remember that no cable modem is compatible with fiber optic, DSL, or satellite services from Verizon, AT&T, CenturyLink, Frontier, and others.

Setting up the MB7621 modem is fast and straightforward, thanks to the quick start guide. Its attractive and compact design minimizes shelf space, enhances cooling, and extends product life while looking fantastic in any home or office. The modem comes with a 2-year warranty and is equipped with rugged lightning and power surge circuits to protect your investment.

User Experience: Most of its consumers felt impressed with its performance. Setting it up was simple, so the modem ran quickly. Since the installation, they have never experienced any lags or dropped connections. However, the customer service is not up to the mark.

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6. ARRIS SB8200 Suddenlink Modem

ARRIS SB8200 Suddenlink ModemARRIS SURFboard SB8200 DOCSIS 3.1 Cable Modem is a reliable device that promises to improve internet connectivity, delivering faster download and upload speeds throughout your home. With over 260 million modems sold, you can trust the brand’s reputation for excellence.

It is certified by most U.S. cable internet service providers, providing wide compatibility. Using DOCSIS 3.1 technology, the modem offers exceptional speed, better security, reduced lag for gaming, and multi-gig networking, which means faster speeds on your copper cable from your internet provider.

One of the standout features of this modem is its ability to deliver download speeds of up to 2 Gbps and upload speeds of up to 2 Gbps, making it ideal for users who require high-speed internet connectivity for online gaming, video streaming, and file-sharing. With 32 downstream channels and 8 upstream channels, users can enjoy a stable and consistent internet connection.

Setting up the modem is simple and secure, requiring you to plug it in, download the SURFboard Central App, and follow the instructions to activate it. You can also connect it to a Wi-Fi router for networking. The package includes the ARRIS SURFboard SB8200 Cable Modem, Power Supply, Quick-Start guide, and a 2-year warranty card.

User Experience: Most consumers have provided positive feedback for this product. According to them, the set-up process was quick and easy, and the two Gigabit Ethernet ports are very convenient, allowing me to connect multiple devices to my network. However, this product may not be the best option if you are under a budget constraint as it comes under the premium range.

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7. Motorola MG7700 Suddenlink Modem

Motorola MG7700 Suddenlink ModemMotorola MG7700 is one of the best modem Wi-Fi router combos designed to provide high-speed internet connectivity and a seamless Wi-Fi experience. Perfectly suited for cable internet service providers, it supports DOCSIS 3.0, allowing for speeds of up to 1 Gbps.

With four Gigabit Ethernet ports and power boost Wi-Fi amplifiers, this modem-router combo ensures seamless connectivity and maximum modem speed of 1000 Mbps, which supports service speeds up to 650 Mbps. The modem features 24 downstream channels and 8 upstream channels, providing a more stable and consistent internet connection.

This modem WiFi router combo features a powerful processor that ensures smooth performance even when multiple devices are connected to the network. It also comes with advanced technologies such as Power Boost, which amplifies the Wi-Fi signal, providing a better coverage area and faster speeds.

Another unique feature of the Motorola MG7700 is its easy-to-use web-based interface that allows you to customize and configure the device according to your needs. The interface also provides advanced features such as parental controls and guest network access, ensuring that your network is safe and secure.

User Experience: Many users have praised the Motorola MG7700 Modem WiFi Router Combo for its excellent performance and high-speed internet connectivity. Users have noted that it provides a seamless Wi-Fi experience, and the 4 Gigabit Ethernet ports make it easy to connect multiple wired devices. However, some users have reported that the device can get hot during extended use, which may affect its performance.

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8. MOTOROLA MB7420 Suddenlink Modem

MOTOROLA MB7420 Suddenlink ModemMOTOROLA 16×4 MB7420 Cable Modem is an excellent choice for fast and reliable internet connectivity. With support for DOCSIS 3.0, this modem delivers download speeds of up to 686 Mbps and upload speeds of up to 123 Mbps, making it perfect for activities like online gaming and video streaming.

The modem also features 16 downstream and 4 upstream channels, providing a more stable and consistent internet connection. This product has received certification from major cable providers such as Comcast Xfinity, Cox, Charter Spectrum, and others, ensuring compatibility and seamless integration with their services.

Setting up this cable modem is a breeze and compatible with most cable internet service providers. The modem features a simple LED indicator system that displays the status of the modem and the internet connection, making it easy to troubleshoot any issues that may arise. The modem also comes with one Gigabit Ethernet port, allowing you to connect a wired device like a desktop computer or gaming console.

User Experience: The feedback for this product has been mostly positive, and many have stated that this is a reliable and cost-effective option for users who need high-speed internet connectivity. But it has no built-in router, so you may have to purchase it separately. However, if you only need to connect one device to the internet or prefer a wired connection, this modem is an excellent choice.

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9. NETGEAR CM600 Suddenlink Modem

NETGEAR CM600 Suddenlink ModemLast but not least product on our list comes from NETGEAR. Their CM600 is the perfect option for people who want high-speed internet connectivity and stability. This modem is specifically designed for cable internet service providers. It supports DOCSIS 3.0, which delivers speeds of up to 960 Mbps, making it an excellent choice for users who require fast internet speeds for online gaming, streaming, and file sharing.

One of the most remarkable features of this modem is its ability to provide download speeds of up to 960 Mbps and upload speeds of up to 240 Mbps. This impressive speed is made possible by the modem’s 24 downstream and 8 upstream channels, which provide a stable and consistent internet connection, ensuring that your online activities run smoothly and without interruption.

The modem also comes with one Gigabit Ethernet port, allowing you to connect a wired device, such as a desktop computer or gaming console, for a faster and more stable internet connection. This feature especially benefits users who require a wired connection for online gaming or other data-intensive applications.

Setting up the NETGEAR Cable Modem CM600 is easy and compatible with most cable internet service providers. The modem features a simple LED indicator system that displays the status of the modem and the internet connection, making it easy to monitor and troubleshoot any issues that may arise.

User Experience: Users had positive feedback about its impressive speed and stability, easy setup process, and compatibility with most cable internet service providers. However, it doesn’t come with an in-built Wi-Fi router.

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How to Choose the Best Modem for Suddenlink

Here, we have curated factors to consider you purchasing a router for Suddenlink. This guide assists you in selecting the most appropriate option that matches your practices and demands.

1. Compatibility

The primary aspect to consider is the modem’s compatibility with Suddenlink’s network. You can verify this by visiting the Suddenlink website or contacting customer support. Although uncommon, your device may be compatible with Suddenlink, but not listed. You can contact your ISP or Suddenlink customer support to eliminate any uncertainty. All the modems reviewed here function seamlessly with Suddenlink.

2. DOCSIS Version

Suddenlink’s network operates on DOCSIS technology (a telecommunication standard), enabling data transfer over coaxial lines. Suddenlink typically provides two DOCSIS versions, 3.1 and 3.0. While DOCSIS 3.1 is newer and faster, DOCSIS 3.0 is older and more cost-effective. Most users should opt for a DOCSIS 3.1 modem, which can prepare your modem for speed and network upgrades by Suddenlink.

However, those living in older infrastructures, such as rural areas, should select a DOCSIS 3.0 modem to avoid compatibility issues. Although DOCSIS 3.1 modems are backward compatible with DOCSIS 3.0, they may cause problems in some areas. To check if you live in a newer or older infrastructure, you can verify the highest internet speed available. If you decide to purchase a DOCSIS 3.0 modem, learning more about the channels before deciding is essential.

3. Speed

Selecting a modem that can accommodate the internet speeds you have subscribed to is important. In other words, if your subscription entails a speed of 500 Mbps, opting for a modem capable of supporting speeds up to 500 Mbps is recommended. 

4. Channels

The number of channels in a modem directly impacts the speed and performance, especially with higher internet speeds. So, the rule of matching the number of channels match with your internet plan.

For instance, if you live in an Internet Market with older infrastructure, such as 150 Mbps or lower, you should not choose a modem with more than 16×4 channels. On the other hand, if you live in a 400 Mbps Internet Market or above, where infrastructure has been upgraded, it is crucial to match your modem’s channels with your Internet plan. Below is table representing suggestions for number of channels based on the speed. 

DOCSIS Internet Speed Channels
3.0 or 3.1 50 Mbps 8×4 or more
3.0 or 3.1 100 Mbps 8×4 or more
3.0 or 3.1 200 Mbps 16×4 or more
3.0 or 3.1 300 Mbps 16×4 or more
3.0 or 3.1 400 Mbps 24×4 or more
3.0 or 3.1 500 Mbps 24×8 or more
3.1 1-Gig Internet 32×8

5. Hardware and Design

Many people overlook hardware and design when choosing a networking device, but neglecting these factors can lead to issues like throttling and overheating. Opting for a device with at least a dual-core ARM processor and 256MB RAM is essential to ensure smooth and optimal performance.

When it comes to design, heat vents are crucial, along with a stable form factor and a portable yet stylish design to make it easy to carry the device around. Additionally, having a networking device with multiple LED lights can help identify and troubleshoot network outages.

6. Price

Based on our research, a DOCSIS 3.0 modem compatible with most plans and has the necessary features to achieve the highest available speeds typically costs between $50 to $90. However, if you require a modem capable of supporting full gigabit or faster speeds, you should expect to pay a significantly higher price, ranging from $150 to $270.

7. Features

Certain modems have extra features such as integrated voice commands, Wi-Fi integration, parental controls, or advanced security features. It is important to evaluate your requirements and opting for a modem with features that cater to them.

8. Brand Reputation

Selecting a modem from a well-known brand with positive customer feedback is recommended. It guarantees you a dependable and long-lasting modem that offers optimal performance.

9. Warranty

Although modem failures are not frequent, owning your modem means that you lose the warranty offered by your cable provider, making the warranty from the modem manufacturer an important backup in case of any issues. Most modems include a one- or two-year limited warranty that covers significant malfunctions. 

How to Set Up a Third-Party Modem With Suddenlink

If you are unaware of the right process to install a third-party modem with Suddenlink, we recommend following the below steps.

1. Check the Compatibility : While purchasing a Suddenlink modem, you must ensure it is compatible with the third-party modem. You can verify this information on Suddenlink’s website or by contacting customer support.

2. Disconnect the Current Modem : You must remove it if you currently use a modem for Suddenlink. It would help if you transferred the ethernet and coaxial cables from your current rental equipment to switch to your newly acquired modem.

3. Connect the new Modem : To set up the new modem, use a coaxial cable to connect the modem. Next, plug the modem into an AC adapter to provide power.

4. Confirm the Internet Access : Upon initially connecting your device, several lights will blink before eventually going dark, except for the ‘Power’ light. The remaining lights will then blink individually before becoming solid, typically displaying green if the device uses labels. Once the ‘Online’ or ‘Internet’ light remains on or becomes solid green, you can be confident that you have a stable Internet connection.

Note: If your light is not solid green, reset your modem by pressing the hard reset button (usually a small button requiring a pin to press) or by unplugging it from the power outlet for a minute and then plugging it back in.

5. Modem Configuration : Connect the modem and computer with an ethernet cable. You should provide the modem’s IP address in the web browser to access the settings. We recommend using the instructions mentioned by the modem manufacturer for configuration. For activating the modem, you can provide the Suddenlink account information.

6. Activating the Modem : For configuring it, contact Suddenlink’s customer service to activate it on their network. They will require the modem’s MAC address and other information to finalize the activation process.

7. Test the New Connection : After the activation process is finished, perform a test on the internet connection to verify its proper functionality.

In case of any issues during the setup process, contact Suddenlink’s customer service for assistance.

Rent Vs Buy – Which One is the Best Option for Suddenlink Equipment

Various factors should be considered based on individual situations and need to determine whether renting or buying Suddenlink equipment is more suitable. Below are some considerations to keep in mind when making this decision:

  • Upfront Cost: If you are under a budget constraint, renting the Suddenlink router is the right choice.
  • Long-Term Costs: In the long run, renting equipment may surpass purchasing it outright. If you intend to utilize Suddenlink’s services for an extended duration, buying the equipment could be more economical.
  • Maintenance: Renting equipment from Suddenlink entails receiving support services from the company. However, if you decide to purchase equipment, you are responsible for any necessary repairs or maintenance.
  • Flexibility: Renting option is the best choice if you have to upgrade the equipment regularly, as it is easy to switch to newer versions as necessary.

And finally, the decision between renting or purchasing Suddenlink equipment depends on individual choices and purchase restrictions. Make sure to consider maintenance costs and future needs before making a choice.


Selecting the appropriate Suddenlink-compatible modem is vital for high-speed and dependable internet connectivity. So, it is important to consider some important factors to make the right choice. We have mentioned them clearly in our Buying guide. By evaluating these factors, you can choose a modem that offers excellent performance, suits your budget, and fulfills your specific requirements.

  • Our first recommendation – NETGEAR CAX 80 Suddenlink Modem comes with Built-in Wi-Fi 6 Router. Its built-in Wi-Fi 6 router delivers high-speed internet connectivity and supports multiple devices.
  • Our second recommendation – The main feature of the ARRIS Suddenlink Modem is its support for DOCSIS 3.1, which delivers high-speed internet connectivity and supports multiple devices.
  • Our third recommendation – The main feature of the NETGEAR C7800 Suddenlink Modem Wi-Fi Router Combo is its high-speed internet connectivity, support for multiple devices, and built-in Wi-Fi router for wireless connectivity.

We hope the information has helped you make the right choice. If you still have any queries, write to us in the comment section below.

1. Can I use my modem with Suddenlink?

Ans: While Suddenlink permits customers to use their modem, doing so means that you won’t be eligible for technical support or equipment replacement services.

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