raoulduke said:

The adapter is supposed to be PCMCIA compliant (it says it's 16bit compliant but it also says it's 32bit compliant.

Click to expand...

Not exactly. My reading of this:

Compliant with 16/32-bit(CardBus) Type II PC Card interface (JEIDA 4.2)

Click to expand...

is that the card is compatible with a 16/32 bit slot, but not a 16 bit slot.

ie, Cardbus 32 bit slots are required to be backwards compatible with PC Card / PCMCIA 16 bit cards, so the slot can reasonably be described as a 16/32 bit slot, but that doesn't necessarily mean the card is 16 bit.

Make sense?

Well interestingly this card does work well on the 3400.  It seems to support UDMA.  It just clearly cannot be used as PCMCIA

Click to expand...

UDMA is a function of the CF card.  The adapter is just a straight-through pin to pin adapter, with no logic.

At this stage I would suggest booting from an external SCSI device and checking out what all is in fact good on that 5300.