10 Best Xfinity Cable Modems 2026 in the United States

The Hitron CODA56 is a DOCSIS 3.1 cable modem designed for fast cable internet plans, supporting speeds up to 2.5 Gbps, which makes it suitable for users with high-speed internet from providers like Xfinity, Spectrum, or Cox. It features a single 2.5 Gbps Ethernet port for connecting to a separate WiFi router, so it does not provide built-in wireless or voice capabilities. This means if you want WiFi, you must already have or buy a router.

The modem supports the latest DOCSIS 3.1 standard, ensuring smoother streaming, gaming, and video calls with low latency, and it is backward compatible with older DOCSIS 3.0 networks. It’s best for cable internet users—not those with fiber, DSL, or satellite connections—and requires cable internet service specifically. The single Ethernet port limits direct connections to one device unless a router is used. A highlight is the included 3-year warranty, offering good protection and peace of mind. The modem may help save money by avoiding monthly rental fees from your ISP.

Before purchasing, make sure your internet plan is 1 Gbps or higher and that your ISP allows third-party modems. The Hitron CODA56 serves as a reliable, high-performance modem for cable internet users who want to maximize speed and already have or plan to get a separate WiFi router.

The Hitron CODA56 is a DOCSIS 3.1 cable modem designed specifically for users with cable internet from providers like Xfinity, Spectrum, and Cox. It supports high-speed internet plans up to 2.5 Gbps, making it well suited for very fast plans or future upgrades. DOCSIS 3.1 technology ensures the modem is current and remains compatible with future cable network improvements. However, this device does not include built-in WiFi, so a separate router is needed to create a wireless network for multiple devices. With just one Ethernet port, it can directly connect only one device without a router.

This modem does not support fiber, DSL, satellite, or fixed wireless internet services, so confirming your internet type before purchasing is important. The single 2.5 Gbps Ethernet port is ideal for maximizing speeds on compatible routers, especially for demanding uses like 4K streaming and gaming, thanks to its low latency and strong performance. While it can help save money by avoiding monthly rental fees from your ISP, you will need to handle setup with your provider and ensure you have the correct router to get full benefits.

Hitron has a solid reputation for technical support and warranty coverage. This modem is best suited for cable internet users with gigabit or higher speed plans who want a reliable, high-performance modem without built-in WiFi.

The ARRIS SURFboard G20 is a robust cable modem router combo that offers a variety of compelling features for home and business users. Utilizing the latest DOCSIS 3.1 technology, it ensures high-speed internet with a maximum capability of 1.0 Gbps and supports multi-gig networking. This makes it an excellent option for those looking to future-proof their internet setup. It also features WiFi 6 (AX3000), which promises better performance and faster speeds for compatible devices, with notable benefits for gaming and streaming activities.

The modem is certified for major U.S. cable internet providers, including Comcast Xfinity, Cox, and Spectrum, which adds to its versatility and ease of use. Users can save on rental fees by owning the modem, potentially reducing their cable bill by up to $180 annually, depending on the provider. Setting up the device is straightforward with the SURFboard Central App, which also offers real-time monitoring and enhanced parental controls.

However, there are some points to consider. While it supports high upload speeds, the actual performance will depend on the service tiers provided by your ISP. Additionally, it may not be necessary for users who do not require ultra-fast internet speeds or those who do not have many connected devices. It's a solid choice for tech-savvy users or households with high internet consumption needs.