a predetermined number of {TAIL ~ electrical contacts} disposed on said {HEAD ~ second surface} of said substrate, wherein said electrical contacts are conductive pads that are coplanar with said ground layer 
a predetermined number of { TAIL ~ electrical contacts } disposed on said { HEAD ~ second surface } of said substrate , wherein said electrical contacts are conductive pads that are coplanar with said ground layer
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH