Peplink 310v4, and USB to Ethernet?

I have a Peplink 310 revision 4, and I noticed that it wasn’t listed in the approved list of USB to ethernet adapters? Is this a typo or is it a known limitation? Has anyone been able to get/make this work? If they have is there any special configuration actions that are required or necessary to make it happen? I currently use my 3 Actiontec modems as “dumb” modems and pass the Client IP onto the peplink. As such, if it does work, do I need to leave the 4th modem in router mode to make it work.

TIA,

±ADT

This is only supported on the Balance 305 and 380+ models at this time.