I'll bet the Sonnet Card will run just fine on the end of its matching cable!
Ahhhh now I understand - you want to go socket->cable->G3->HPV, instead of socket->G3->cable->HPV, so you can move the G3->HPV elsewhere in the case. Well, seeing as both the HPV and the G3 can sit in the 601 PDS socket, sure, why not?
it looks like a straight passthru cable to me with some intervening circuitry that likely allows 2 PDS cards to be addressed / Disable that kinda nonsense
You may not have to. If I remember my PDS lore, the cards themselves (at least
030 PDS ones) carry pseudo-slot IDs - the relative position on a multi-card chain matters not.