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