So far, I was quite satisfied with the WLAN adapter until I switched to Windows 8.1 .. The driver does not work properly, or only 2.4G networks are detected. I've already contacted several times the Asus Support. Answer: You still do not know when and if the rausbringen ever for Windows 8.1 drivers ... WTF? Mainly sold, after that whether it works with customers in the future or not.
Now the part just stand around because I have extreme fluctuations in the 2.4GHz range and 5GHz no longer works.
Just senseless what you get as a reply from the Support. The do not come out with the idea of further report but give predefined answers and my all is well now.