GNU/Linux Ubuntu 18.04 TP-Link Archer T4U Plus Wifi Driver Setup – Step-by-step Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install TP-Link Archer T4U Plus AC1300 Wireless 802.11ac Driver for Ubuntu 18.04 Bionic LTS GNU/Linux Desktop.
And the Ubuntu 18.04 TP-Link Archer T4U Plus Adapter is based on the Realtek rtl8812AU Chipset.
So here below you find instructions to Install rtl8812AU Driver on Ubuntu.
GNU/Linux Ubuntu TP-Link Archer T4U Plus Wireless Driver Installation Guide