{HEAD ~ A system} for extending the USB VBUS power signal includes {TAIL ~ at least one PCA board} 
includes
{ HEAD ~ A system } for extending the USB VBUS power signal includes { TAIL ~ at least one PCA board }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL