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.
paul
> On Jun 18, 2018, at 12:50 PM, Al Kossow via cctalk <cctalk@classiccmp.org>
> wrote:
>
> Is this a 200/DL (RS423 data lines only) board?
>
> https://www.ebay.com/itm/352381870034
>
> A normal 200 would have two large IDC connectors on the pcb for serial I/O
>
>
