my review of Netgear A6210 USB WiFi Adapter

Here's what Netgear says about it:

"802.11ac Dual Band with High Gain Antenna

Your PC at the Speed of AC. Now Faster with USB 3.0

When it comes to connecting online, speed is everything. Now with this AC1200 USB 3.0 adapter, you can make even your older Windows^®-based laptops and desktops connect at the speed of 802.11ac, the world's fastest WiFi technology. Increase range with high gain antennas, and with USB 3.0, you can connect even faster than USB 2.0. Just plug this adapter into a USB 3.0 port and enjoy faster browsing, streaming and gaming. Compatible with USB 2.0 and the latest 11ac WiFi devices and backward compatible with 802.11 a/b/g/n devices."

NetGear A6210 Genie

I use it to gain access to the internet thru XFinity WiFi at 60mbps. The Genie is connected to my desktop with Windows XP Pro with all the updates until Microsoft stopped updating it. I also use FireFox ESP 52.9.0 (32 bit) USB2.0

The Genie as far as I am concerned is a piece of crap! Each time I want to use my desktop, I have to go thru a routine of connection repairs before it works. Ever since the last Netgear update on it, I've had nothing than problems with it. It has been very unreliable. Even when I am on the internet, I can lose the connection at any given point in time. As a matter of fact, I just did a few seconds ago and had to do another connection repair. I have no problems using my other computers using the XFinity router/wifi. The problems are with the Netgear Genie.

I don't recommend this device for anyone using the USB 2.0 even tho the device is supposed to be compatible with all Windows and both USB 2.0 and 3.0.