That is a SCSI enclosure built on a 95 frame. https://www.youtube.com/watch?v=az7Sg0EHr5E
This made sense with small capacity drives, but when you could stuff 1GB or bigger drives into a 95, it wasn't so appealing. IBM came out with OBI SCSI enclosures that cost less to make. 3517?
If you look at the video after the dude gets done wasting time about halfway through, you will notice there is a snap on rear blank bezel over Slots 4-8 and the planar ports area. A 68? pin SCSI bulkhead passthrough, a metal guard over the passthrough, and what you can't see behind the PSU is the load card, that has some big sandbars for load regulation. Do the math, the SCSI HDs might pull @ 150W maximum, there are no adapters to power, or planar, or complex.
You could stuff a 8595 or 9595 class single serial / single parallel port planar in there, add floppy and op panel cable, floppy cable, op panel, op panel bezel, HD sleds, HDs, and about 19? or so of the black chromate planar screws...
Oh, forgot complex, side wall fan, fan power contact assembly... http://ps-2.kev009.com/ohlandl/
