A device insertion signal is transmitted to the device controller in {HEAD ~ response} to {TAIL ~ another power management event} and while the device remains installed within the socket 
A device insertion signal is transmitted to the device controller in { HEAD ~ response } to { TAIL ~ another power management event } and while the device remains installed within the socket
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH