The switching hub transmits {HEAD ~ the received data} only to {TAIL ~ designated ones} among the connected devices, and transmits the received data to the repeater hub 
to
The switching hub transmits { HEAD ~ the received data } only to { TAIL ~ designated ones } among the connected devices , and transmits the received data to the repeater hub
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH