USB network dongle works fine on the HI12 on the Windows side since drivers are available. No way to make it work on the android side since, … to my knowledge, no drivers are implemented , nor available.
Just another point of clarification ther is no such thing as 5G wifi, there is wifi n with two frequency ranges,
2.4 Ghz or 5 Ghz, I suspect this is what you ment?
I have also tried a USB to ethernet adapter, same issue, works fine on the windows side doesn’t on Android.
Henry