Tytonegro:
Your internal card will only be seen by your PC if AND only if you boot up your IQ without your external card.
After bootup, if you insert your external card, your PC will see both the internal and external card.
This will last until you power off (not sleep) your IQ.
If you boot up your IQ with the external card in place, you will only see the external card on your PC.
So if you want to see both your internal and external card. Everytime you boot up your IQ, you have to make sure that your external card is not inserted.
Hope that helps. This does not explain why the IQ works the way it works .... but then, you already know my thoughts on the internal card
.
Cheers