COMMELL PMCAE - Manual (Page 31)

PMCA User’s Manual Hardware Setup
Power and Fan Connector 31
2.15 <Power and Fan Connector>
The PMCA provides a standard ATX power supply with 24-pin ATX connector , and the
board provides one 4-pin fan connector supporting smart fan for CPU cooler and one 3-pin
cooler fan connector for system .
2.15.1 <Power Connector>
Connector: ATX
Type: 24-pin ATX power connector
PIN assignment
1 3.3V 13 3.3V
2 3.3V 14 -12V
3 GND 15 GND
4 5V 16 PS_ON
5 GND 17 GND
6 5V 18 GND
7 GND 19 GND
8 PW_OK 20 -5V
9 5V_SB 21 5V
10 12V 22 5V
11 12V 23 5V
12 3.3V 24 GND
2.15.2 <Fan Connector>
Connector: SYSFAN
Type: 3-pin fan wafer connector
Connector: CPUFAN
Type: 4-pin fan wafer connector
Pin Description Pin Description
1 Ground 2 +12V
3 Fan Speed Detection 4 Sense
Pin Description Pin Description Pin Description
1 Ground 2 +12V 3 Fan Control