Load the driversudo modprobe rtl8812au (or 8812au if you get an error message saying rtl8812au does not exist)Now your Wifi dongle should work and you can use it to connect to your 5G network in Network Manager.Reference:Recently I did some upgrades on my home network:1. Clone and install the driver from Gibhubsudo apt updatesudo apt install gitgit clonesudo dkms add./rtl8812ausudo dkms build rtl8812au/4.2.2 (if you get an error saying ‘rtl8812au’ folder does not exist, then change rtl8812au to ‘8812au’)sudo dkms install rtl8812au/4.2.2 (if you get an error saying ‘rtl8812au’ folder does not exist, then change rtl8812au to ‘8812au’)4.
