GNU/Linux Elementary OS Alfa AWUS036AC Driver Setup Guide
Hi! The linked Tutorial Shows You Step-by-Step How to Install Alfa Network AWUS036AC Wireless 802.11ac Driver in Elementary OS GNU/Linux Desktop.
And the Elementary OS Linux Alfa AWUS036AC Setup is based on the Realtek rtl8812AU Chipset Driver Installation.
So the linked guide explain How to Download and Install the rtl8812AU Linux Driver.
