Let me be clear on the IMS backplane--it's not a 12-slot model, but a
4-slot version. It appears to be factory-engineered this way and a glance
at the rails in my Altair 8800 appears to say that this was intended for
incorporation into a MITS box and not the IMS box. Connection is obviously
the MITS wire-by-wire method, not the IMS edge connector.
I hadn't realized that IMS made add-ons for the MITS boxes, but here you
have one.
Cheers,
Chuck