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Question: Comcast told us to get DOCSIS 3.0.  Is this compatable?  Now using Motorola SURFboard eXtreme Wireless Cable Modem.  Will there be any issues?
Document: Unfortunately this router is marred by poor software with quality issues. Out-of-the-box firmware constantly dropped connections, which necessitated a firmware update. Only after going to the web site to get the latest firmware - this level was not available from the Netgear genie admin web application - were connectivity issues resolved.Upon attaching a portable 2T USB 3.0 drive to the USB port I found another surprise!
Then I started to move my movies from the slow USB 2.0 to the USB 3.0 disk, 5 minutes into the copying process, all network is down: both the Wired and Wireless network; I then went through my configuration to make sure there is nothing wrong, I could not find any error, at the mean time I also have internet access w/o issue.
It would not recognize it. After a little research, I found out I needed to set the driver up as GPT and create 2 partitions of 2 TB each (using Windows Disk Management). I now have the 4 TB hard fully working and the thing is loaded with music, videos and pictures. USB 3 transfer speeds are great and having a reliable network shared drive through READYSHARE is awesome. I also have another 2 TB hard drive connected to the 2.0 USB port.
You can only get it if you download the image from Netgear support, it WILL NOT show up in the router's "check for upgrade" function. Mine came with V1.0.0.8 IIRC.This is actually a very easy router to set up if you like your hand held. Theoretically you are safe using the factory SSIDs since Netgear claims to assign individual values to each router, like a serial number.
No wall mount2. I hate the Netgear Genie config. The old style was much better.3. Bandwidth usage counts all network traffic. This includes internal and external. I worked with tech support and they essentially said this was working as intended after two weeks of back and forth via email. I tried this twice with the same results.4. The speed is lousy. I never get above 54mbps on either 2.4 or 5ghz using N or AC devices.5.
DNS issues seem to be less frequent than with the Ethernet ports or 2.4GHz wifi, but they still occur.Rebooting the router usually fixes the problem, but only temporarily. I'm having to reboot it on a daily basis right now just to keep things functional. I'm running the newest firmware, too (updated shortly after installation to 1.0.0.22_1.0.10 as of this review), but it doesn't help.
I purchased this Netgear AC1450 router from Costco, the reason I got this router because of its USB 3.0 port support; it is easy to setup and go online.
I knew better, but the price was right so I decided to take a chance. Bad decision. I had major issues right out of the gate. I had devices that could not get a DHCP address from the router. Our home VOIP service (Ooma) would not connect properly. Online gaming was having all kinds of problems. I did some reading and found others with similar issues.
I have two iPads, a Mac laptop, two smart phones and a desktop. We set this router up in about 15 minutes and it worked perfectly. My Desktop had Win 7 on it and so I didn't have the issues that people are having with Win 8. I did, however, have to get get an add on adapter for my for my desktop because the network card that came with my box (new from Ibuypower in April) wouldn't properly connect and  maintain the connection or get the speed.
Old router was a Dlink DIR 655 where I was getting 130Mbps speeds with 2.4Ghz using 802.11n on my devices - fairly reliable. Using the Netgear AC1450 I could get 144Mbps speeds on 2.4GHZ Band... not a huge difference and hardly worth switching to just for 2.4Ghz.So I was mainly interested in the 5Ghz band (for my devices that could best use it) which gave me 300Mbps speeds.
Answer: This is not a modem, this is a router.  You should get the difference clear and make sure you know what you need before you lay down any money.