I have a problem in the software.

I was using the card in PCI-E slot then i moved the card to another PCI-E slot but now the softwore doesn't recognize "Aux-in" and i don't know why.
i don't even know what Aux-in does since all it's working perfectly but in the previous slot i could switch between Aux-in and Mic,now onlu Mic is highlightened.