@TSTNomad For this WN821N V6, we actually only provide the driver for Linux (kernel 2.6.24 ~ <4.9.60), for any higher kernel version, there is no TP-Link official driver anymore. The chipset of the...

@ChrisG85 Hello, kindly refer to the below instructions to check the connection again: https://www.tp-link.com/support/faq/2698/ Below is the latest driver for the adapter, you may give it a go and...

@9497 Please refer to the below troubleshooting guide to confirm some basic info if you failed to install the driver on your computer: https://www.tp-link.com/support/faq/2240/

@HieuChu May I know the operating system of your computer? Windows 10? You may try to update the driver to be 22.0 then monitor the connection again:...

@Nuno_Pereira Are you able to get the band option under Basic->Internet page?

@Davigc Hello, May I know what is the current Windows version of the computer, 1909, or 2004? You may verify it as below: https://www.tp-link.com/support/faq/2722/ Were you unable to detect any 5ghz...