This hard disk needs the M switched on for it to spin up I believe.
Good guess.. Yes!I didn't get what you mean by make the picture of the underside of the drive, take a photo of it?

Yes. It's always good to have such items around when dealing with SCSI.So would getting the following items below be headed in the right direction?http://www.ebay.com/itm/50pin-Internal-Male-Terminator-SCSI-50-pin-/300632348954?pt=LH_DefaultDomain_0&hash=item45ff15991a
http://www.ebay.com/itm/24-50-Pin-SCSI3-Connector-Internal-Ribbon-Cable-Up-2-Drives-CablesOnline-/270837249543?pt=LH_DefaultDomain_0&hash=item3f0f287607
Yes, if that particular Apple CD-ROM drive model has onboard termination.Getting cable would also allow me to put an apple scsi cd rom at the end to useas a terminator?