16
•
Jumpers and Connectors
This 2-pin connector is an “ATX Power Supply On/Off Switch” on
the system that connects to the power switch on the case. When
pressed, the power switch will force the system to power on. When
pressed it for 4 seconds, it will force the system to power off.
2.1.12 CN15 : External keyboard connector
1
Pin #
Signal Name
1 Keyboard
clock
2 Keyboard
data
3 NC
4 GND
5
5 Vcc
2.1.13 CN16 : PS/2 Keyboard Connector
Pin #
Signal Name
1
Keyboard data
2
N.C.
3
GND
4
5V
5
Keyboard clock
6
N.C.
2.1.14 FAN1,FAN2 : CPU fan connector
FAN1 & 2 are 3-pin header for the CPU and system fan
respectively .The fan must be a 12V fan.
Pin #
Signal Name
1
Fan speed
2
+12V
3
GND
3
1
