Memory module, {HEAD ~ memory system} having {TAIL ~ the memory module}, and method for manufacturing the memory module 
having
Memory module , { HEAD ~ memory system } having { TAIL ~ the memory module } , and method for manufacturing the memory module
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