Suggestion for people having problems with getting this to work. I was having intermittent connections until I realized the air unit wasn’t always recognizing the Ethernet adapter when they were powered on at the same time (IE: battery attached to distribution board). I added a SPST switch inline with the air unit so I can power it up after the OTG equipment and haven’t had a problem since.
I’m using this USB power supply for the OTG payload. Tested with a 4S battery, no issues.
https://www.amazon.com/Agile-Shop-Converter-Module-Convert-Adapter/dp/B07JHH294R/