Attached: A slightly higher rez version of the diagram, thanks to "find visually similar images" in google search. At some point we'll work out how I can get read/write access to the new Riocar.org site and I'll add that diagram to the drive upgrade guide.

I don't know how you found that image in the first place, all my search terms produced either photos of disk drives or diagrams for desktop drive jumpers.

EDIT: This diagram may be incorrect for the KingSpec drives with the red KingSpec logo. In order to get the drive to work as master in a dual drive configuration, I had to put jumpers over pins 1/2. Whereas the diagram says that's "slave".

So it's not the same thing for all the drives out there.