@Andryct It should be the display issue on 5Ghz protocol and it actually works at 802.11ac whichi we could tell from its Wireless Link speed. You could try this chipset driver for T3U and see if it...

@theleo84 Hello, To exclude the issue, can you remove the USB multi adapter/ USB hub and connect Archer T4U directly to the USB port on the back of your computer? Did you disable the power save model...

@neugdae Hello, Thank you for your detailed post ~ If a range extender helps with the issue, may I know how far from the computer using T3U and main router? Please put pc closer to router and see if...

@shanolek Hello, Sorry for the delayed response. Here is the latest chip set driver for T600U Plus, please uninstall the old driver and this one helps:...

@Brockalee Hello, If PC recognizes the adapter as Unknown device, that means the hardware is detected by computer and could be the issue on driver. You could try this chipset driver for TL-WN823N V1:...

@Hijawi Good day, Please try this chipset driver for Archer T4E first and see if it helps:...