Fujitsu Siemens Computers D1961 Technical Manual page 22

Pin assignment of internal ports
Audio front panel
Pin Signal
1 Micro input
3 Micro bias
5 Right line output
7 not connected
9 Left line output
If the audio front panel is not used, you must plug jumpers on pin pairs 5/6 and 9/10.
USB - dual channel
(internal or external via special wire)
Pin
1
3
5
7
9
Fan 1 and 2
Pin
1
2
3
4
12 - English
Signal
VCC C
Data negative C
Data positive C
GND
Key
Pin
2
4
6
8
10
1
Pin
2
4
6
8
10
Signal
GND
12 V
Fan sense
Fan Control
A26361-D1961-Z120-1-7419, edition 2
1 2
Signal
Analogue GND
Analogue VCC
Right line return
Key
Left line return
2
Signal
VCC D
Data negative D
Data positive D
GND
not connected
1