@Sauravgtk Good day. Since you mentioned windows update, did the issue start just after the windows update? How much speed you can get from the wireless adapter?—maybe the internet overload caused...

@theloosesavior Good day. May I know how long have you had the wireless adapter? Have you already installed the driver for the TL-WN822N, such as...

@nemesis9 Good day. May I know the kernel version of your Linux system? Is it possible that you could change the router channel to be 1.6.11 to see whether it is connected to the 2.4ghz or not? By...

@Roko101 Good day, Are you trying to say when the Archer T4U is connected to the USB3.0, the speed is not expected? Or the wireless adapter is not detected when unplugged into USB3.0 port? If it is...

@eran40 Good day. Thank you very much for your time and patience. Please also help me check the Ethernet link speed on the computer, such as: https://www.tp-link.com/support/faq/2899/ Thank you!

@xitzee Good day. May I know how long have you had the adapter and when did this issue start? May I know the model number of your main router? Could you please help me check the system info and...