We had a lot of SCSI devices in my house, and I think maybe like, 2 devices had the same connector. Even ZIP and JAZ, both by iomega, couldn't agree. The Atari ST in my place also has an ACSI connector, which is my guess, SCSI but yet more different somehow.
At that point I didn't even want plug'n'play or hotplug because getting something set up once was enough for you to never desire to change it.