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