In my experience, prior to the Apple Cinema Display & TiBook launches, 99% of Apple business systems I worked on had 3rd party monitors (Radius, SuperMac, Sony, Barco). Then it flipped to 99% Apple LCD displays with Eizo being the rare alternative. Most home systems I encountered had Apple monitors.
Way back (1999) we had a couple 9500’s that had this issue and I believe it was traced to a cache issue. The 8500 has replaceable cache vs the 9500’s soldered so may not be relevant to your situation.
I'd agree that would be an odd connector for an output device.
So did some more digging around:
From Macuser 05/90
There is an ad for Calcomp Monitors. "CalComp DrawingCard display system". "Display System" might be referencing that the monitor came with a card?? There is a review of their 21"...
Here’s an InfoWorld article from 1990 referencing some Calcomp NuBus video cards.
ETA: Could be a Chroma Vision Plus based on above post re: 24-bit graphics.
Nah, it was still in use when I picked it up, he had a bunch of old banking docs on it that he accessed frequently. On the way to pick it up he called me and said the deal was off and he was going to recycle the whole thing since he couldn’t get the hard drive out. I said I could do it. When I...
It was surprising since the guy was the original owner and the CD drive failed at some point and he had it 'professionally' removed so I can't imagine this thing was never cleaned in almost 30 years.
I’m not sure, but it would make sense that it would be male since the scsi connector on Macs are female. I suppose if you wanted to use it with a cable that would be problematic.