Unfortunately, the product can not keep up close. I use a Fritz box 7490 to a current system with Windows 8.1
The reason of my Fritz WLAN Stick N was to change, to improve performance of my wifi.
Unfortunately already came the disillusionment during commissioning. Permanent disconnections, so I do not even came into the Internet. So I searched through the relevant help pages and tried the update of the sticks. On that brought nothing!
Following I changed the radio channels manually, AVM recommends to the Support Page.
A small ray of hope: The crashes were gone. Unfortunately, with the consequence of a very low performance, which was significantly worse than with my old Fritz WLAN Stick N.
As a result, my old WLAN stick now reconnected in the computer and this goes back. AVM, a premium provider, I expect a lot more here! Too bad.