Also, optionally, the VBUS power signal may be routed to a programmed or discrete logic circuit or {HEAD ~ other circuitry} 25 to adjust the polarity of the signal and to output {TAIL ~ an Enable signal} 
to output
Also , optionally , the VBUS power signal may be routed to a programmed or discrete logic circuit or { HEAD ~ other circuitry } 25 to adjust the polarity of the signal and to output { TAIL ~ an Enable signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL