The dimensions of the open end 48 are selected so that it fits within the opening in {HEAD ~ the front} of {TAIL ~ the system unit} 12 which was for a disk drive having a particular form factor 
of
The dimensions of the open end 48 are selected so that it fits within the opening in { HEAD ~ the front } of { TAIL ~ the system unit } 12 which was for a disk drive having a particular form factor
OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH