Yes, but you can still follow them about and figure out what way things plug in.
OP's question is already answered, but this is what I was talking about. Not all CF adapters just plug into the WS/PDQ because WS/PDQ tries to take over master/slave/cableselect pins and not all CF adapters follow normal pinouts with those.
The adapter that I ended up using in my PB1400/166 is one that will not work in any WS/PDQ without the master/slave jumpers being relocated.
Sure, most are not like this, but it is a consideration because not everyone here will notice why their CF adapter is not working.
Also of consideration for OP is that if he has an adapter with no 2.5" mounting holes(such as the ones in elfen's pics) he will need to properly insulate and secure the adapter to avoid shorting or dislocation.