{TAIL ~ The intermediary device} 43 can utilize non volatile memory connected to {HEAD ~ the external memory interface} 438 as buffer memory 
{ TAIL ~ The intermediary device } 43 can utilize non volatile memory connected to { HEAD ~ the external memory interface } 438 as buffer memory
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH