M Diamond wrote Operating system? Try to update chipmaker's driver(AR9382). https://www.atheros.cz/atheros-wireless-drivers.html I'm using Windows 7 Home Premium. I think I've tried those drivers...

Region : UnitedKingdom Model : TL-WDN4800 Hardware Version : V1 Firmware Version : 9.2.0.489 ISP : Sky Broadband I currently have the TP-LINK TL-WDN3800 N600 Wireless Dual Band PCI Express Adapter...