I am unable to test, as it is now set up at work (EIDE 99 and working perfectly).
I'm sure I had it in my IDEfix 97 to test the card when it failed to work in a plain A1200 with floppy disk power.
(The problem turned out to be switched cables on the floppy power, resulting in a blown card. The CF adaptor survived though, and as mentioned is currently in use.)
What cabling are you using? I used a 3.5" - 2.5" which had a power plug on one end (unused) and plugged into the 2.5" connector.
It's possible my memory is failing in my old age and I used the A1200 internal, but I don't think so!