Line-In Socket (easy question)

[YeOldeHomer]

Hi,
I need help finding my Line-In socket. I'm using a SB live 5.1 soundcard.

I am using it to plug a mixing desk into, and I have tried all ports on the back of the PC and the only one I get sound out of is the port I previously had my speakers plugged into (green socket).

Any help is appreciated
Thankyou

 

[H4x3r]

should be the red or black.......but if you tried all the ports and none of them worked it's probably a software issue. Make sure you have "line in" selected for the software you're using