@Jeff67
May I get the hardware version of the adapter Archer T2U?
May I know the Linux version of your PC?
There is no TP-LINK official Linux driver, and we only have a publish driver provided by the chip-set manufacturer. But we haven’t tested the driver, so TP-LINK cannot guarantee the performance and stability.
If the hardware version of your adapter is V3 and the Linux kernel is 2.6.24 ~ 4.15, you can try this third party driver to check if it works.
https://static.tp-link.com/2018/201808/20180822/T2U_V3_T2U Plus_V1_T2U Nano_V1_Linux driver from chipset