I am trying to connect microphone to my early 2011 17" MacBook Pro, but I cant get it working. MBP 17" has 2 audio jacks so I supposed the second one is for microphone but just doesnt work (Mac or Windows) and I gotta use USB audio card shipped with my headset.
Am I doing something wrong or the other jack is not supposed for audio input with classic 3.5mm microphone jack?
EDIT: I of course selected the Line-In device in preferences. The bar under device list wasn`t doing anything while I was talking, but when I was moving with the cable it blinked (I guess because I created some noise by moving the cable).