Just an offhand thought, but could a prop device be built to plug into a PCIE x1 slot on the host PC's motherboard? How would you write the Windows/Linux drivers to interface with it?
Windows 10 Home:
Propeller Tool 1.3.2, BASIC Stamp Editor 2.5.4, Javelin Stamp IDE x.x.x, Arduino IDE, PST
BASIC Stamp Board of Education, Propeller Board of Education, Propeller Project Board, Propeller Mini