looks like STD Bus ( http://www.winsystems.com/wp-content/uploads/specs/std_section1.pdf)
On Mon, May 29, 2017 at 8:17 PM, Chuck Guzis via cctalk < cctalk@classiccmp.org> wrote: > On 05/29/2017 10:13 AM, Mike Stein via cctalk wrote: > > > But it's also quite possible that the PS and the backplane don't even > > belong together. > > ^ This was my initial guess. It just looked wrong. > > --Chuck >