Need to install RealTek RTL8812AU driver for Ubuntu Core 16

@ogra: I am struggling in this. I will rather return the current USB and order another USB dongle which is just plug and play on my system. The system in which I am trying to install the USB dongle is Dell Edgegateway 3003 and it is having Ubuntu Core 16 installed. Do you have any recommendation USB dongle which supports 2.4 ghz and 5 ghz.