While you could opt for your ISP’s modem and router rental service, many consumers prefer to select their own modem and router. To ensure success when foregoing ISP-provided hardware, it's essential to pick a modem and router that is both approved for and performs well with your ISP. The most important consideration is whether your modem is compatible with your provider; a router simply needs to be compatible with your modem.
If you already own a modem, router, or a modem/router combo and are starting new Comcast Xfinity service, you can verify its compatibility using Xfinity’s modem compatibility list.
The best modem for Xfinity often depends on your specific needs. If you're planning to purchase your own equipment, opting for a two-in-one modem and router combo device is a great way to get the reliability and speed you need.
Curious about which routers work best with Comcast Xfinity approved modems? In general, make sure your router is compatible with the modem you’re using.
Xfinity allows you to bring your own modem as long as you buy one that’s compatible with Xfinity internet service.
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UPGRADE Your Internet: Choosing the RIGHT Internet Modem
Key Considerations When Choosing a Modem
Before purchasing a modem, remember the download speeds that come with your Xfinity plan. It is recommended that most people get at least 150 Mbps to enjoy streaming TV online. Xfinity-compatible modems should have a max recommended speed that is the same or greater as your Xfinity internet plan’s download speed. That way, your modem will deliver all the speed you’re paying for. And if you have a home phone plan, make sure to get an Xfinity Voice-compatible modem like the NETGEAR CM2050V.
Here are some important factors to consider:
- Compatibility: Ensure the modem is on Xfinity's approved list.
- DOCSIS Standard: Opt for DOCSIS 3.1 for fast, stable internet and future upgrades.
- Speed: Match the modem's maximum speed with your Xfinity plan's download speed.
- Voice Support: If you have a home phone plan, choose a modem that supports Xfinity Voice.
Understanding DOCSIS
DOCSIS stands for “Data Over Cable Service Interface Specification.” It’s the standard for sending a lot of data by coaxial cable at once.
The latest version is DOCSIS 3.1, which Xfinity has set up in many cities, while Xfinity has largely stopped offering DOCSIS 3.0-capable modems. DOCSIS 3.1 modems are backward-compatible, so if you get a DOCSIS 3.1 modem, you’re set no matter where you live.
Top Xfinity Compatible Modems
Here are some top-ranked Xfinity compatible modems based on customer reviews and performance:
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| Modem Model | Description |
|---|---|
| NETGEAR Nighthawk CM2050V | Ultra-high-speed cable modem for Xfinity Voice, delivering gigabit-speed internet and clear call clarity. |
| ARRIS SURFboard S34 | DOCSIS 3.1 modem that supports speeds up to 10x faster with higher efficiency, ideal for streaming, gaming, and conferencing. |
| ARRIS SURFboard G34 | DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo, supporting smooth 4K video streaming and low latency online gaming. |
| ARRIS SURFboard T25 | Cable modem with two Gigabit Ethernet ports and dual telephony ports for fast connection speeds and digital voice support. |
| NETGEAR Nighthawk CM3000 | Multi-gigabit speed cable modem supporting link aggregation for true multi-gigabit internet speeds. |
| NETGEAR CM1000 | Ultra-High Speed Cable Modem with speeds up to 1Gbps, backward compatible with DOCSIS 3.0. |
| NETGEAR CM700 | High-Speed Cable Modem with speeds up to 1.4 Gbps, ideal for streaming and gaming. |
| ARRIS SURFboard SB8200 | DOCSIS 3.1 Cable Modem capable of delivering true Gigabit speeds, approved for use with major cable internet providers. |
| ARRIS SURFboard G36 | DOCSIS 3.1 Cable Modem & Wi-Fi 6 Router combo with a 2.5 Gbps Ethernet port for multi-gig networking. |
| ARRIS SURFboard SB8163 | DOCSIS 3.0 Cable Modem with 16 downstream x 4 upstream channels for high-speed internet access. |
Detailed Look at Specific Models
- ARRIS S33: The ARRIS S33 is our pick for the best modem for Xfinity. This absolute beaut’ from ARRIS makes our hearts go pitter-patter. But if you want to be on the cutting-edge of modem tech, it’ll cost ya.
- Motorola MB8611: The Motorola MB8611 also supports 2.5 Gbps internet speeds and Xfinity’s gigabit internet plans. If you’re living in the fast lane, you’ll appreciate how smoothly this modem streams 4K Ultra HD content and handles high-speed online gaming.
- NETGEAR CM2050V: If you’re getting a voice plan from Xfinity, the NETGEAR CM2050V will help connect your phone service as well as your internet service.
- ARRIS SB6190: While the ARRIS SB6190 runs on DOCSIS 3.0 tech-older than the DOCSIS 3.1 of our top picks-it’s still a zippy little modem that retails for less than $100.
Modem vs. Router: Understanding the Difference
A modem connects your home to the Internet. A router creates your Wi-Fi network so your devices can connect wirelessly.
The Benefits of Using Your Own Modem
- Cost Savings: Avoid monthly rental fees by purchasing your own modem.
- Control: Choose a modem that meets your specific needs and performance requirements.
- Upgrades: Select a modem with the latest technology for faster and more reliable internet.
Additional Tips
- Check Xfinity's Approved List: Ensure your modem is on Xfinity's approved list to avoid compatibility issues.
- Consider Your Internet Plan: Choose a modem that supports the speed tier of your internet plan.
- Read Customer Reviews: Look for feedback on modem performance and compatibility from other Xfinity users.
Other Internet Service Providers
This list of modem/router combo devices recommended by Xfinity gives good guidance, but, in general, make sure your router is compatible with the modem you’re using.
- Cox: There are a number of Cox compatible modems. To find a router that works with Cox, you need to simply ensure that it is compatible with your modem and that it supports the level of Internet speed you’ve chosen.
- Spectrum: Already have your own modem and/or router and wondering whether it’s compatible with Spectrum? Check out Check out Spectrum’s list of approved modems.
- Optimum: If you’re wondering, “Can I use my own router with Optimum?” or “Can I use my own modem with Optimum?”, the answer is yes! Follow these instructions to connect your approved Optimum modem and router to Optimum’s Internet service.
- Mediacom: Mediacom does allow residential customers to provide their own routers and modems. However, modems and routers must be DOCSIS 3.0 or 3.1 or they won’t work, and Mediacom specifically recommends 3.1 so customers can hit the advertised speeds.
- Sparklight: Sparklight advises customers who do not rent their modems and routers from them to ensure they are at least a DOCSIS 3.0 cable modem. Only cable modems (or eMTAs) work with Sparklight. DSL modems are not supported. When it comes to picking the right modem for your Sparklight Internet service, keep in mind the advertised speed and specs of your service plan.
- Armstrong: ARRIS SURFboard SB8200: This modem is great for Zoom Extreme plans and will work with every type of Armstrong service. Though Armstrong subscribers do receive a mesh system with two pods to provide WiFi service, you are able to use your own routers.
- MCTV: MCTV high-speed Internet requires a cable modem. Customers can supply their own, or they can use one provided by MCTV, free of charge. Which routers work best with MCTV approved modems? Almost any - just be sure your router is compatible with the modem you’re using.
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