I wonder if that's a DECserver-100 board. I remember seeing a box (I thought it was a
prototype but I may be confused) with a fairly small PCB inside a much larger
rackmount-sized enclosure, with 8 separate wire bundles going from connectors on the board
to the MMJ jacks on the front panel.
The history supposedly was that the original design used a box the size of the board, with
those connectors either exposed on the front or brought out to standard front panel
connectors. Ken Olsen decreed that the connectors weren't acceptable and introduced
MMJ, requiring the box to be redone but the PCB was kept. Or so I was told anyway.
On Jun 18, 2018, at 12:50 PM, Al Kossow via cctalk
<cctalk at classiccmp.org> wrote:
Is this a 200/DL (RS423 data lines only) board?
A normal 200 would have two large IDC connectors on the pcb for serial I/O