10 Best Cox Compatible Modem 2025 in the United States

The NETGEAR Nighthawk Modem Router Combo (CAX30) is a solid choice for users looking for a Cox-compatible modem that also functions as a WiFi router. It supports DOCSIS 3.1, which is the latest standard for cable modems, ensuring high-speed internet suitable for plans up to 2Gbps. This model boasts impressive channel bonding with 32x8 capabilities, enhancing your internet speed and performance during peak usage times.

Strengths include its ability to cover a large area of up to 2,500 square feet, making it ideal for medium to large homes. With WiFi 6 technology, it can support multiple devices (up to 25) without compromising performance, which is a great feature for households with numerous smart devices or for gaming. The inclusion of four Gigabit Ethernet ports and a USB 3.0 port provides versatile connectivity options for wired devices, enhancing its utility.

On the downside, it doesn't support DSL providers or bundled voice services, which could limit options if you're considering those services. Additionally, while the built-in security features and NETGEAR Armor software offer good protection for your network, some users may find the initial setup and app management a bit complex if they aren't very tech-savvy. The NETGEAR Nighthawk CAX30 stands out for its high-speed capabilities, strong coverage, and solid performance, making it ideal for users with high internet demands, such as gamers or busy households. However, those looking for compatibility beyond cable internet may need to consider other options.

The ARRIS SURFboard SB8200 is a strong contender in the cable modem market, particularly for users looking for Cox-compatible options. With DOCSIS 3.1 technology, it supports internet speeds up to 1 Gbps, making it ideal for households with heavy internet usage, like streaming and online gaming. Its ability to reduce lag and improve security adds to its appeal, especially for gamers and families that require reliable connections.

This modem also comes with two 1-Gigabit Ethernet ports, allowing you to connect multiple devices directly, which is a great feature for those with a wired setup. One significant advantage is the potential savings on rental fees—owning this modem can cut down your cable bill significantly, which is a nice perk for budget-conscious consumers.

While the SB8200 excels in performance, it does not include a built-in router, meaning you will need to purchase one separately if you want Wi-Fi throughout your home. Compatibility is a strong point, as it works with a wide range of major U.S. cable internet providers, including Cox, making it versatile for those who might change ISPs in the future.

The ARRIS S34 modem is designed for users looking for a high-performance option compatible with Cox and other major cable providers. One of its standout features is the DOCSIS 3.1 technology, which is significantly faster than the older DOCSIS 3.0, promising better performance for activities like gaming and streaming. With a maximum internet speed capability of 2.5 Gbps, it can handle demanding multi-gigabit plans, making it a great choice for heavy internet users or households with multiple devices connected at once.

An attractive benefit of owning the ARRIS S34 is the potential savings on monthly rental fees, which can add up to around $168 per year, depending on your provider. The modem is also certified with a variety of ISPs, including Cox, Spectrum, and Xfinity, ensuring a wide range of compatibility.

Setting up the ARRIS S34 is easy with the SURFboard Central App, making it user-friendly for those who may not be tech-savvy. Additionally, it offers built-in features like two Ethernet ports for direct wired connections, which can enhance performance for devices like gaming consoles and PCs.