Renting equipment as part of the initial purchase package from Cox can be expensive in the long run.
For example, the Cox Panoramic WiFi Gateway rental will cost you $14 per month, and $168 per year.
Therefore, we recommend that you get your own best modem for Cox so that you can save money on a third-party device while enjoying fast speeds, great coverage, and reliable connections.
Purchasing a separate modem and router has many benefits compared to a modem router combo device, namely, faster internet speeds, easier upgrading, access to the latest advanced technologies such as Beamforming and MU-MIMO, more customization, and stronger security features.
A key factor to consider when selecting a Cox compatible modem is whether to go for a device that is compatible with DOCSIS 3.1 or DOCSIS 3.0.
DOCSIS 3.1 operates ten times faster than its predecessor, but is best utilized on high-speed 1000 Mbps or 500 Mbps internet plans.
If you opt for a 100 Mbps or 250 Mbps package, a modem that operates DOCSIS 3.0 is sufficient.
Our choice of the best modem for Cox is the ARRIS Surfboard S33. It features the DOCSIS 3.1 technology which allows you to have multi-gig networking, reduced lagging when gaming as well as improved security for your devices and network. DOCSIS 3.1 is ten times faster than DOCSIS 3.0 and it has backward compatibility with DOCSIS 3.0 devices.
The Motorola MG8702 is a modem router combo that comes with DOCSIS 3.1 technology to offer higher speed and extended coverage. This technology also ensures the modem is backward compatible with DOCSIS 2.0, 3.0, and 1.0 services. Additionally, it enables you to have simultaneous streaming for your whole home as it comes with MU-MIMO technology.
If you are looking to save some cash but still get stable internet, the Motorola MB8600 is a good option. It can easily manage overcrowded and congested networks as it has an ARM-powered processor at the core. During peak internet usage, you should expect reliable internet speeds if the accompanying router is configured correctly.
If you do not know which modem to get, this guide comes with the best modems compatible with Cox that scored best on the tests done by our network engineers over a two-week period.
Best Modem For Cox (2024)
- Best Overall: ARRIS Surfboard S33
- Modem Router Combo: Motorola MG8702
- Budget Friendly: Motorola MB8600
- For Gaming: Netgear Nighthawk CM1200
- Best For Cox 500 Mbps: ARRIS Surfboard SB8200
- Modem Router Combo For Home Use: ARRIS Surfboard SBG8300
- Best For Cox 250 Mbps: Netgear CM500
Top 7 Cox Compatible Modems
Purchasing a modem means that you no longer need to pay monthly rental fees which will save you money in the long-run.
However, the modem that you buy should be compatible with Cox internet services, otherwise, you will be wasting your money on a product that won’t maximize the speed of your internet plan.
To ensure that the modem is suitable for your needs, you should check the DOCSIS technology, user satisfaction, and connection speeds.
1. ARRIS Surfboard S33 (Editor’s Choice)
Design
The ARRIS Surfboard S33 is a portable modem that measures 5.24*5.24*1.65 inches and weighs 1.52 pounds. It also has vents that protect it from overheating. The rounded design gives the S33 a sense of solidarity and stability.
The front side of the Surfboard S33 has LED lights that show the status of your internet connection while the back side features power, Ethernet, and coaxial cable ports.
Performance
The DOCSIS 3.1 technology in the ARRIS Surfboard S33 allows you to have multi-gig networking, reduced lagging when gaming as well as improved security for your devices and network.
DOCSIS 3.1 is ten times faster than DOCSIS 3.0 and it has backward compatibility with DOCSIS 3.0 devices.
Additionally, the DOCSIS 3.1 technology enables you to enjoy fast internet speeds and gigabit-plus speeds. The streaming and gaming experience that you get from the ARRIS S33 has no lagging and less latency.
The S33 comes with one 1-Gig ethernet port and one 2.5-Gig ethernet port allowing you to create wired connections using an ethernet cable to your devices such as a computer, a printer, consoles, and a router that is compatible with gigabit-level speeds.
The setup of this modem is straightforward. Firstly, connect your modem to the power outlet. Secondly, download the SURFboard app.
Finally, follow the steps on the app to activate your modem. Once the modem is setup, connect a WiFi router to the modem to create a network for your devices.
The multi-core processor is paired with 1 GB RAM to ensure that you have less congestion in your network while the OFDMA channel support enhances the data transmission of the ARRIS S33.
Who It’s For
The ARRIS S33 is suitable for users who need higher bandwidth for their home or office and need a modem that comes with multiple ports so that they can stream and game easily as well as set up IoT connections.
Specs
- Speed: 2500 Mbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 2 Ethernet ports
Pros
- Features an ultra-fast processor.
- Has a multi-gig port.
- Comes with a new design.
- The networking specs are the latest.
Cons
- Does not have telephone capability.
2. Motorola MG8702 (Modem Router Combo)
Design
The Motorola MG8702 has a compact design which lets it take up less space in your home by using fewer cables and outlets.
It weighs 2.15 pounds and measures 9.5*2.88*9.75 inches. The MG8702 allows you to connect your devices via WiFi and ethernet.
This modem router combo comes with DOCSIS 3.1 technology that offers higher speed and extended coverage. This technology also makes the modem to be backward compatible with DOCSIS 2.0, 3.0, and 1.0 services.
Performance
The Motorola MG8702 enables you to have simultaneous streaming for your whole home as it comes with MU-MIMO technology which allows the modem to communicate with multiple devices at once.
The USB port enables this device to have optimized network storage which allows you to generate a shared network for storing your files including videos and photos.
On the other hand, the 4 ethernet ports allow you to have wired connections and connect to devices such as smart TVs, game consoles, computers, and other devices using the ethernet cable.
From our experience during product testing, setting up the MG8702 is quick and easy when you follow the simple steps on the Motosync app.
Additionally, the app has extra features for managing your network, using parental controls to monitor screen time, testing and optimizing your internet speed as well as chatting with network experts if you have any issues.
Who It’s For
If you want a modem router combo that offers you higher internet speeds and saves you money as it is cheaper than purchasing a separate router and modem, the Motorola MG8702 is the best option.
Specs
- Speed: 3200 Mbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 4 ethernet and 1 USB
Pros
- You can connect several devices to the network.
- The technology is superior.
- Quick set-up and easy to use.
- The design is compact.
Cons
- None found
3. Motorola MB8600 (Budget Friendly)
Design
As far as aesthetics are concerned, the Motorola MB8600 has a vertical structure as well as a premium-looking black form factor.
Device throttling is limited because of the air vents located in the hardened plastic outer layer, which enables good air circulation when in use.
This modem has 5 LED lights on the front side and a coaxial cable input, reset button, power button, and a power jack in the rear.
This modem has a smart, aesthetically-pleasing design, measuring 7.87*7.25*2.25 inches and weighing 1.2 pounds.
Performance
The Motorola MB8600 can easily manage overcrowded and congested networks as it has an ARM-powered processor at the core.
During peak internet usage periods, you should expect consistent internet speeds provided that the accompanying router is configured correctly.
When it comes to network standards, the MB8600 has DOCSIS 3.0 support which is enough for standard data transmissions as the 32*8 channel bonding is 8 times faster compared to the DOCSIS 2.0 support.
However, during the peak hours when there is congestion in the network, the MB8600 depends on the AQM technology and DOCSIS 3.1 support to prioritize streaming and gaming traffic efficiently.
Also, if you are into torrenting, this device provides digital tuning support to ensure that you have increased speeds.
The MB8600 has only one ethernet port but the auto-sensing support enables you to focus on traffic over wired connections.
It is easy to configure this modem, courtesy of the availability of IPv6 support and the web interface.
Plus, the flash storage of 128 MB ensures efficient and simplified routing while providing better control over the modem when multicast routing, auto-configuration support, and zero address collisions are concerned.
Who It’s For
If you are looking for a Cox compatible modem with high-end features, the Motorola MB8600 is the best option.
It has a secure setup with integrated authentication and advanced flow labeling that allows you to manage high-speed wired connections in the best way.
Specs
- Speed: 1000 + Mbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 1
Pros
- Has integrated surge protection.
- Minimal possible latency.
- QoS with Ipv6 support.
- Supports link aggregation.
Cons
- Has only one Ethernet port.
4. Netgear CM1200 (For Gaming)
Design
The Netgear CM1200 comes in black, weighs 2.32 pounds, and measures 6.1*3.4*10.3 inches.
It features DOCSIS 3.1 modem technology and 32*8 channel bonding which ensures that you experience the fastest internet connection.
The CM1200 comes equipped with four Ethernet ports which allows you to establish wired connections to devices such as a games console, laptop / computer or WiFi router.
Performance
The Netgear CM1200 comes with multi-gig features which allow for link aggregation where you can combine two 1Gig ports to form one 2G port to create faster and smooth wired connections.
If you are subscribed to a cable internet plan that is up to 2 Gbps, you will enjoy faster connections as the CM1200 is built to support high speed plans.
During our tests, we experienced a reliable and stable internet connection, even when streaming 4k HD on multiple devices simultaneously.
This modem allows you to connect to any router and start browsing using the devices connected to the network.
The CM1200 can be easily set up using three quick steps. Firstly, use a coax cable to connect the modem.
Secondly, activate the modem using the steps provided when you log in to the computer connected to it. Finally, create a connection between the modem and the router via the ethernet cable.
Who It’s For
The Netgear CM1200 is for users who are looking to save on rental fees and still get a cable modem that offers faster speeds for gaming and streaming.
Specs
- Speed: Up to 2 Gbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 4 Ethernet ports
Pros
- Delivers reliable and fast internet.
- Quick and simple setup.
- Save you on modem rental fees.
- Can connect to any WiFi router.
Cons
- Some users might experience frequent reboots.
5. ARRIS SB8200 (Best For Cox 500 Mbps)
Design
The ARRIS SB8200 measures 5*2*5 inches and features two 1-Gig ethernet ports. This modem comes with DOCSIS 3.1 which is the latest modem technology that supports future and current internet plans of up to 1 Gbps.
DOCSIS 3.1 technology is 10 times faster compared to DOCSIS 3.0 and delivers better security, minimizes lag while gaming, and allows you to have multi-gig networking.
Performance
The ARRIS SB8200 is designed to provide you with smooth internet without any interruptions by bringing you superior connectivity, increasing the capability of your network, and delivering faster streaming and downloading in your entire home.
The DOCSIS 3.1 technology in this modem improves the performance and efficiency of your network and minimizes the latency of high-bandwidth applications such as 4K gaming, conference calls, and gaming.
The SB8200 allows you to create a whole-home network by connecting a WiFi or mesh system which means that you can connect more devices to the network from any location in your house.
The ethernet ports allow you to create wired connections to a router or devices and provide support to secondary IPs for homes or businesses.
Some of the system requirements that you should have to connect to the SB8200 are compatible operating systems such as Windows 7, 8, or 10, a high-speed internet access account, and web browser access like Safari, Google Chrome, or Firefox.
You can easily set up the SB8200 as you only need to follow three simple steps including plugging the modem into the power outlet, downloading the SURFboard Central App, and activating the device by following the instructions provided.
To create a network for your devices, connect the modem to a router using an ethernet cable.
Who It’s For
If you are subscribed to Cox 500 Mbps internet plan and looking to reduce your cable fees, the ARRIS SB8200 is the cable modem for you.
Specs
- Speed: 2000 Mbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 2
Pros
- You can connect to any router.
- Fair price.
- Delivers fast internet.
- The DOCSIS technology delivers higher speeds.
Cons
- The LEDs are very bright.
6. ARRIS SBG8300 (Modem Router Combo For Home Use)
Design
The ARRIS SBG8300 is a two-in-one product that ensures you get low latency and high speeds when using the internet.
This WiFi cable modem enhances your network capability and offers you ultra-fast downloading and streaming throughout your home.
The SBG8300 comes with the DOCSIS 3.1 technology which is 10 times faster compared to DOCSIS 3.0 and delivers better security, minimizes lag during gaming, and allows for multi-gig networking in your whole home.
Performance
The built-in WiFi 6 and DOCSIS 3.1 technologies increase the performance and efficiency of your entire network with minimized latency for data-intensive applications like 4K streaming, conference calls, and gaming.
Also, this latest DOCSIS technology can support internet plans of up to 1 Gbps, and is future-proof.
The setup of ARRIS SBG8300 is simple and secure. You just need to plug the modem into the coaxial cable, download the SURFboard Central app for activating the modem using the steps provided, customize and set up the WiFi network by connecting the router, and finally add your devices to the network.
When you finish setting up your modem, you can use the app to monitor the devices on the network in real time, pause the internet and set time limits using parental controls, and much more.
The four Ethernet ports allow you to establish wired connections to devices that can be connected through the ethernet cable, and the router provides internet speeds of up to 2350 Mbps.
The SBG8300 offers an all-in-one solution as it combines a WiFi router and a cable modem in one device. It is a space-saving and convenient device that offers a reliable internet connection.
Who It’s For
The ARRIS SBG8300 is the best modem router combo for general household use as it ensures you can stream without buffering and level up your gaming without paying any monthly modem fee.
Specs
- Speed: 2350 Mbps
- Channel Bonding: 32*8
- DOCSIS: DOCSIS 3.1
- Ports: 4
Pros
- Has low latency and high performance.
- It is future-proof.
- Supports cable internet plans of up to 1 Gbps.
- Has a built-in WiFi router.
- Straightforward set-up.
Cons
- Instructions for setting it up are not clear.
7. Netgear CM500 (Best For Cox 250 Mbps)
Design
The Netgear CM500 is a great modem that is affordable and suitable for Cox 250 Mbps subscribers. The CM500 has a standard design, weighs 1.46 pounds, and measures 4.9*7.3*2.4 inches.
The CM500 features air vents that are positioned well to ensure that it does not overheat.
The 5 LED lights located at the front of this modem enable you to know the status of your internet connection. The cable input and the power port are situated at the rear panel.
Performance
The Netgear CM500 features DOCSIS 3.0 technology and is backward compatible with devices that have DOCSIS 2.0 modem technology because of the 16*4 channel bonding.
Given its price, the CM500 comes with only one ethernet port which you can use for a wired connection to a device such as a computer, gaming console, or printer.
The Broadcom chipset ensures that you have a smooth internet connection by cutting through any interference on your network.
This modem comes with 128MB of RAM which enables it to handle gaming latency well. Also, the 8MB of NAND flash memory provides storage for the firmware details on the modem.
The Quality of Standard feature enhances traffic prioritization which allows some devices to have more bandwidth when they are used for data-intensive tasks.
In our testing, the product setup was one of the easiest in the market. Setting up the CM500 only takes five minutes as you only follow three simple steps which include: connecting the modem to a coax cable, connecting the computer using an ethernet cable so that you can activate the modem, and once the modem is activated, you can connect your router so that you can create a network for your devices.
Who It’s For
The Netgear CM500 is recommended for individuals who need a modem that can be paired with Cox 250 Mbps internet plans. It is an affordable modem that provides you with faster connections and better internet performance.
Specs
- Speed: Up to 400 Mbps
- Channel Bonding: 16*4
- DOCSIS: DOCSIS 3.0
- Ports: 1 Gig Ethernet
Pros
- Setting this modem is easy and fast.
- An affordable option.
- Has QoS support.
- Reliable internet.
Cons
- Has less ventilation.
Factors To Consider When Looking For The Best Cox Compatible Modems
Supported Speed
When choosing a modem compatible with Cox, the primary consideration is the speed. It is important to determine the desired internet speed based on channel bonding and the corresponding DOCSIS protocol that meets your needs.
The modem’s speed must match your subscription plan.
If you use a slower modem than your internet speed, it can create a bottleneck for your connection, while speeds beyond the modem’s capabilities will be unattainable.
To avoid performance limitations, verify that your modem can support your internet plan, otherwise, you will be wasting money on a product you cannot fully utilize.
DOCSIS 3.1 vs DOCSIS 3.0
DOCSIS is an acronym for Data Over Cable Service Interface Specification. In simpler terms, it is a cable internet protocol used by ISPs that determines the maximum achievable speeds.
Essentially, it is the technology that converts your incoming network into a network that functions within your home.
There are multiple versions of DOCSIS available, with DOCSIS 3.1 being one of the latest iterations capable of supporting speeds up to 10 Gbps. DOCSIS 3.0, while older, is the most widely used version and can achieve speeds of up to 1 Gbps.
Generally, if your internet plan does is 500 Mbps and above, a DOCSIS 3.1 modem will sufficiently enhance performance to make the investment worthwhile.
For lower internet speed internet plans such as 100 Mbps or 250 Mbps, a DOCSIS 3.0 modem is more than sufficient to deliver optimal speeds.
An advantage of selecting a DOCSIS 3.1 modem is that will handle future internet plan upgrades, should you want to increase your speed.
In general, we recommend opting for a DOCSIS 3.1 modem as ISPs are gradually phasing out support for DOCSIS 3.0.
However, if you’re seeking a temporary solution, you can save some money by selecting a DOCSIS 3.0 modem for now. Just bear in mind that it won’t be as fast!
Channel Bonding
Channel bonding involves combining several channels to maximize the capacity of the modem for handling data. Essentially, channel bonding enhances the modem’s ability to manage data.
You may have come across specifications such as 32×8 or 16×4 channel bonding.
The larger number represents the downstream or download channels, while the smaller number denotes the upstream or upload channels. A higher channel count corresponds to a faster connection.
While it may be tempting to opt for an expensive modem with high channel bonding, the actual speed improvement will primarily depend on your internet plan.
Selecting 32×8 channel bonding for a 200 Mbps plan would be excessive, whereas a 16×4 modem would be a more suitable and cost-effective choice.
Cox Compatibility
Before purchasing a modem, it is essential to confirm its compatibility with Cox and your specific plan. Cox offers an approved comprehensive list of third-party modems, which should be your main point of reference.
While a non-approved modem might work, it is unlikely to fully utilize the speed capabilities of your plan.
Additionally, reading customer reviews can provide insights into its compatibility with other Cox customers.
Modem Router Combo vs Separate
When signing up with your internet service provider, you’ll be prompted to choose between a modem, a router, or a modem/router combo.
Combos and separate device setups each offer different benefits and downsides, which we explain below.
Selecting separate modem and router devices brings benefits such as easy upgrades and cost-effectiveness.
It allows you the flexibility to enhance your networking capabilities and replace either component with a superior model whenever needed.
Opting for separate modem and router devices grants greater control over firmware and settings, particularly vital for security-conscious small businesses.
On the contrary, a modem/router combo is worth considering as a cost-effective choice.
It requires only a single power outlet, saving space and reducing the number of wires and cables.
The combo unit allows the ISP to retain some control, including determining optimal software and pushing firmware updates they deem beneficial for the device.
In the end, the choice relies on personal needs and preferences. Separate devices offer more customization and advanced features, and modem router combo units offer cost savings, convenience, and simplified setups.
Evaluating your specific needs, including security, performance, and ease of use, will aid in deciding whether a separate modem and router or a modem/router combo is the suitable option for your situation.
How To Set Up A Third-Party Cox Approved Modem
Here are the steps to set up a third-party modem approved by Cox:
1. Self-installing the modem
After obtaining your Cox Internet modem, you can begin the self-installation process by following these steps:
- Connect one end of the coaxial cable to the modem and the other end to a power source. Turn on the power.
- Allow the indicator light on the modem to stabilize. This usually takes approximately four to six minutes, but it may take longer if the device undergoes a firmware update.
- Next, connect one end of the Ethernet cable to the modem and the other end to either your computer or the back of your router.
2. Activating your Modem
Once you have set up your modem, the next step is to activate it. Follow these straightforward steps:
- Open your computer’s browser and go to the official Cox website.
- Access the admin portal by logging in with the credentials found on the back of the modem.
- After a successful login, an indicator light on the modem will illuminate. However, not all modems have this light. If it is not present, wait for some time before attempting to use the internet.
Once the modem is activated, you can now connect it to your router if you have one and create a network for your devices.
Benefits Of Getting Your Own Cox-Supported Modem
If you currently rent a Cox Panoramic WiFi Gateway, it’s advisable to reconsider. Cox charges $14 per month for the gateway device, totaling $168 per year. Purchasing your own modem would prove cost-effective in no time.
By using your own compatible modem, you not only save money but also gain improved security and performance.
Opting for a third-party modem often results in faster speeds compared to using the modem provided by the ISP.
While Cox’s modems are sufficient, there are typically superior alternatives available, especially in terms of high-performance modems.
When you purchase your own modem, you gain the advantage of selecting a device that fits your specific requirements.
Cox’s rental modems may not be optimal for your home or business, especially if you have multiple connected devices.
By choosing your own modem, you can maximize performance and take advantage of advanced security features, ensuring an optimal network experience.
Cox Modem FAQs
Do I Need To Get A DOCSIS 3.1 Modem For Cox?
Typically, the DOCSIS 3.0 32 x 8 channel bonding support is sufficient for most internet plans up to 1-Gig. However, the benefits of DOCSIS 3.1 are truly realized for 500 Mbps plans and above.
DOCSIS 3.1 modems also operate well in areas prone to network congestion due to DOCSIS 3.1 support with 2 x 2 OFDM/OFDMA.
It allows for increased channel width and enables reaching the ISP’s promised maximum speeds.
Additionally, DOCSIS 3.1 support prepares you for upcoming faster multi-gig speeds that Cox may introduce in the future.
What Are The Cox Modem Requirements?
To ensure an optimal internet experience, Cox recommends a DOCSIS 3.1 modem or gateway. Also, devices with higher channel counts result in faster connections.
Select a modem that supports your subscribed internet speed and verify compatibility with Cox’s internet service. Finally, consider the number of ports available on the modem so that you can maximize the wired connections.
Is It Better To Buy A Modem Router Combo Or Separate Devices?
If you choose a low-speed internet plan, a 2-in-1 combo device is suitable. Cox Ultimate is the recommended option, with starter plans offering speeds of 300 Mbps to 600 Mbps.
Using a combo device reduces attenuation by minimizing the time it takes for data packets to travel from the modem to the router.
Final Words
The process of searching for a modem that is ideal for Cox Internet services can be challenging as you need to find a device that offers a smooth and stable connection while ensuring you save on rental fees.
Also, the modem should be compatible with Cox and support the internet speed you are subscribed to.
However, if you cannot decide which modem to get, we suggest that you get the ARRIS Surfboard S33.
It features the DOCSIS 3.1 technology which allows you to have multi-gig networking, reduced lagging when gaming as well as improved security for your devices and network.
DOCSIS 3.1 is 10 times faster than DOCSIS 3.0 and it has backward compatibility with DOCSIS 3.0 devices.
Ensure that you refer to the buying guide section so that you can understand more about how you can choose the best modem that is compatible with Cox.
