ADLINK NuPRO-A331 - Manual (Page 40)

26 Hardware Information
System Panel Pin Header (CN27)
(2x10 pin header, 2.54mm pitch)
Connects to chassis-mounted buttons, speakers, and LEDs.
Fan Connectors (FAN1/2)
(1x4 Wafer connector, 2.54mm pitch)
Pin # Signal Function Pin Group
1 P5V +5V Power
Power LED 2 NC
3 HC_PLED-L Power LED signal
4 NC
5 GND Ground
6 GND Ground
ATX Power
7 NC
8 ATX_PSON-L ATX Power-On signal
9 P5V_SB_ATX +5V Standby
10 PMEJ Power Control signal
11 HC_SPKR Speaker signal
Chassis
Speaker
12 NC
13 NC
14 P5V +5V Power
15 HC_RSTBN-L Reset signal
Reset Button
16 GND Ground
17 HDLED_PWR HDD LED signal
HDD LED
18 P5V +5V Power
19 HC_PBTNJ Power-On signal
Power Button
20 GND Ground
Pin # Signal
1 GND
2 Fan power (+12V)
3 Fan Tachometer
4 Fan Speed Control
1
10 20
11
1 4