Hello, I tried to install the driver for the Archer T9UH on Windows 10. I downloaded the driver from the tp-link homepage:...

@Kevin_Z thanks for adivce. it worked!

Hello, my Archer T9UH AC1900 often connects to the Wifi-Router just using 802.11n (2.4Ghz) instead of the much faster 802.11ac (5Ghz). My router supports 802.11ac and when the adapter has established...