we are tracking this internally via 1-12347540071 / EN-138619 or 1-12468386901 / EN-141027 and there is a Microsoft ticket 119112521002135 being worked.
A colleague managed to track this down to:
KB4486153 in Windows version 1709 (16299.1565) & 1809 (17763.864)
KB4533002 in Windows version 1903 (18362.535)
Once you remove them via “View update history” > “Uninstall updates” you can go to “Device Manager” and “Uninstall and Delete” the Trio from being a mass storage device (Which it is not anyway).
I suggest anyone with this issue work with Microsoft and reference 119112521002135 as nothing has changed from the Trio perspective.
this was fixed in the latest 5.9.3 release for Trio here: