Here I'am presenting description of SCSI connector, which is usable for making SCSI cable. I redraw it from manual to my GVP SCSI controller for Amiga 500. I was made three functional exemplars. 25pin Cannon connector was firstly used on Apple Macintosh. 50pin self-tapping CENTRONICS type connector is connected to cable identically to HDD connector, but pinout is other (1-25, 26-50). Don't look at numbers, connect 1 to 1 and it will work.