Arrow 5 indicates the direction of view toward the front panel 6, and arrow 7 is in {HEAD ~ the direction} toward the drive panel or rear panel 8 or {TAIL ~ the drive end} 
Arrow 5 indicates the direction of view toward the front panel 6 , and arrow 7 is in { HEAD ~ the direction } toward the drive panel or rear panel 8 or { TAIL ~ the drive end }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL