Well, I'd
posit that Apple _set_ standards instead of following them.
For example, Apple's use of a DB-25 for a SCSI port and the pinout
they chose has been copied widely throughout the industry.
Try to plug in a device with the Future Domain pinout. I don't know
which came first, I just know that they are incompatible to the point
of releasing the majic smoke.
How strange! I have a Future Domain SCSI card (850-MEX?) that uses
exactly the Apple pinout, and even carries a sticker on the rear
bezel stating same!
More
conventionally, the serial ports follow normal pinouts, even
though they're electrically RS-422 instead of RS-232C.
The "normal pinouts" were defined by Apple. Other systems used different
pinouts on the same Mini-DIN connector (Epson PX-8, for example).
As Tony caught, I had been referring to the DB-9 serial ports on the
128k, 512k, and 512ke Macs. I started early...
regards,
-dq