User guide
Hardware Installation
Overview
Hardware Installation
8. Speaker Connector (4-pin SPEAKER)
There is one jumper cap over pin1 and pin2 (default setting) for internal buzzer. I
f
you want to use external case-mounted speaker instead of internal buzzer, remove
jumper cap and connect speaker wire to the 4-pin connector.
9. ATX Power Switch / Soft Power Switch (2-pin PWR_SW)
A momentary switch connected to these connector controls the system power.
Pressing the button once will switch the system between ON and SLEEP. Pressing
the switch while in the ON mode for more than 4 seconds will turn the system off.
The system power LED shows the status of the systems power.
10.System Power LED (3-pin PWR_LED)
This 3-pin connector connects the system power LED, which lights up when the
system is powered on and blinks when it is in sleep mode.
11. Chassis, CPU and Aux Fan Connectors (3-pin FAN):
There are five fan connectors. two fans are used for CPU; one fan is for chassis;
one fan is used for system, and the other fan are for Auxiliary. These connectors
support cooling fans of 500mA (6W) or less. Depending on the fan manufacturer,
the wiring and plug may be different. The red wire should be positive, while the
black should be ground. Connect the fans plug to the board taking into
consideration the polarity of this connector.
1-15
AUX Fan
CPU Fan
Chassis Fan
Ground
+12V
Rotation