It's not on a mobo, it is the front audio pcb, dont have a multi meter, nor the bucks to buy one. Can i send you photo's of what i need?
Thanx
So don't do experiments on your PC. Actually I damaged a motherboard to by this. It was lga 775. So it don't cost me too. But bro it is better to buy a new f audio assembly from amazon or some anywhere
P1 PORT 1L
P2 AUD GND
P3 PORT 1R
P4 PRESENCE#
P5 PORT 2R
P6 SENSE 1 RETURN
P7 SENSE SEND
P8 KEY
P9 PORT 2L
P10 SENSE 2 RERURN
And my f pnl wires are marked
Line out fl -white wire
Line out rl - yellow wire
Line out fr - red
Line out rr - blue
Mic in - green
Gnd - black
Mic power - orange
So basically your MB has High definition sound I/O and your front panel is AC which doesn't have sensing switches in sockets. Check MB manual, most have schematics for both modes.
fl = Front left
fr = Front right
rl = Rear left
rr =Rear right.
It would help if you had posted the motherboard and case model numbers with your initial question. Those little details are kinda important to formulating an answer, don't you think?