FUJITSU Mainboard D1931 - Manual (Page 25)

Pin assignment of internal ports
A26361-D1931-Z120-1-7419, Edition 1 English - 15
Audio Input 1
Pin Signal
1 Left audio input
2 Audio GND
3 Audio GND
4 Right audio input
Power control (system monitoring) 1
Pin Signal
1 Power Guard Control
2 PS FAN Control
3
4
PS FAN Sense
5
6
7
8
Audio port front
1 2
Pin Signal Pin Signal
1 Micro input 2 Analogue GND
3 Micro bias 4 Analogue VCC
5 Right line output 6 Right line return
7 not connected 8 Key
9 Left line output 10 Left line return
If the audio front panel is not used, you must plug jumpers on pin pairs 5/6 and 9/10.