The USB transceiver units {TAIL ~ 730A}, 730B may provide an interface to {HEAD ~ respective USB signal lines} 
The USB transceiver units { TAIL ~ 730A } , 730B may provide an interface to { HEAD ~ respective USB signal lines }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD