The power switching means operates irrespective of an external supply voltage level of {TAIL ~ the power} supplied by {HEAD ~ the host device} 
The power switching means operates irrespective of an external supply voltage level of { TAIL ~ the power } supplied by { HEAD ~ the host device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD