Look at Von's diagram:
(click to embiggen)
His Ethernet card and Daystar adapter both work in either the IIsi or the SE/30. In both cases, cards added to them mount over the motherboard, and inside the case - in the SE/30, on the right *, heading left, and in the IIsi on the left, heading right. Therefore the two PDS slots must be reversed relative to each other.
Course, the SE/30 was never designed to take a Nubus card. Presumably this also means any back panel connector soldered directly to a (Nubus or IIsi-only PDS) card will end up buried deep inside the SE/30. This must be why so many '030 PDS cards have a cable and a separate PCB for the back panel connector.
* from case front.
(click to embiggen)His Ethernet card and Daystar adapter both work in either the IIsi or the SE/30. In both cases, cards added to them mount over the motherboard, and inside the case - in the SE/30, on the right *, heading left, and in the IIsi on the left, heading right. Therefore the two PDS slots must be reversed relative to each other.
Course, the SE/30 was never designed to take a Nubus card. Presumably this also means any back panel connector soldered directly to a (Nubus or IIsi-only PDS) card will end up buried deep inside the SE/30. This must be why so many '030 PDS cards have a cable and a separate PCB for the back panel connector.
* from case front.