The NETGEAR CM500 cable modem is ideal for XFINITY Blast and Extreme customers. However, it is compatible with almost every cable provider. The CM500 is for speed tiers mostly up to 300 Mbps. It is Cable Labs and DOCSIS 3.0 certified and is 16X faster than 2.0 devices.
Next to the ARRIS SB6141, this cable modem is one of the best-selling modems of all time. I own one and have been using it with Comcast for over two years now. Not once have I had a problem with it. My subscribed speed is 100 Mbps and it keeps up with it continuously. This modem has been a perfect fit for my XFINITY service. I highly recommend the NETGEAR CM500 to anyone looking for a modem for speeds up to 300 Mbps.
|Top Compatible XFINITY Speed Tier||Extreme / 300 Mbps|
|WiFi (Modem Router Combo)||NO|
Cable Modem FAQ
- Does the CM500 have WiFi?
No. In order to use the CM500 with more than one wired device or any wireless device, you will need a separate router.
- Is DOCSIS 3.1 better than DOCSIS 3.0?
DOCSIS 3.1 is faster than 3.0. However, most XFINITY customers do not have the ability to subscribe to 3.1 / Gigabit speeds. So for now, if you have 600 Mbps or lower, a DOCSIS 3.0 modem will suffice. We don't suspect 3.1 to be standard or the required format for at least three years.
- Why should I buy my own modem for XFINITY?
Buying your own modem, say the CM500 will only cost a one time fee of roughly $45. Comcast will charge you at least $10 a month to lease or rent a modem from them. This fee will not be removed from your bill until you return the modem to XFINITY. Even if it has been paid for 10 times over.
- What is the difference between the CM500-100NAS & CM500-1AZNAS?
The only notable difference is the latter is an Amazon number. This means it may arrive in different packaging. Other than that, the modems are identical.
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This is a good modem for Comcast if you subscribe to speeds up to 300 Mbps. If you intend on boosting your speed with XFINITY in the near future, consider a DOCSIS 3.1 modem. Although more expensive, a 3.1 modem is backward compatible with 3.0. A 3.1 modem would be the last you would need for at least 10 years, provided it lasts that long.