I've just contacted via e-mail a guy selling a Pulsar II 24 ADAT...
Personally I don't know any plate hosting that solution and the guy's answers about are sounding anyway strange to me ( I asked about analog I/O type, he answered something like no analog).
the 24adat was sold on the original Scope cards and was available as a optional purchase for many years. the 24adat plate has 3x lightpipes and 2x midi but no analog i/o. most likely, this was a srb with an i/o plate added or had an i/o swap at some point. if you need this type of i/o, it should work just fine....
the adat/24 plate has, indeed, no analog I/O. I have one myself.
it has an internal connector that hooks to an additional slot cover. you need 2 slots for using the cable whip with it, thus.
the whip connected to the additional slot cover has only midi afair (I don't use that whip).
-greetings, markus-
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I'm sorry, but my karma just ran over your dogma.