In response to determining that the interface is coupled to the host device, the electronic circuit is coupled to the interface such that {HEAD ~ power} is supplied to the electronic circuitry from {TAIL ~ the host device} 
is supplied from
In response to determining that the interface is coupled to the host device , the electronic circuit is coupled to the interface such that { HEAD ~ power } is supplied to the electronic circuitry from { TAIL ~ the host device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL