i have windows 8.1, i installed drivers and it works great. however, i'm worried that next week when windows 10 updates it won't work since there are no drivers for it.
http://www.tp-link.com/en/download/TL-WN722N_V1.html#Driver
http://www.tp-link.com/en/download/TL-WN722N_V1.html#Driver