Attached to the second printed circuit board is {HEAD ~ the female portion} of {TAIL ~ a zero insertion force connector} 
of
Attached to the second printed circuit board is { HEAD ~ the female portion } of { TAIL ~ a zero insertion force connector }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL