Front Panel Indicator: SW/LED、PWRLED、
SPEAKER
PC_BEEP 
1
NC 
2
Ground 
3
+5V 
4
SPEAKER
+
1 2
-
3
PWRLED
21 | BIOS | LAN CHIP | ALC 65 0 |
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| W83627HF | Winbond |
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| 82865P | Intel | Socket 478 |
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| Intel I CH 5 |
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Hard Driver | HD LED (+) | Power LED (+) | Power | |
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Reset | Reset Control | Power Button (+) | ||
Button | Reset Control (+) | Power Button | Button | |
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SW/LED
HD LED (Hard Drive LED Connector)
This connector can be attached to an LED on the front panel of a computer case. The LED will flicker during disk activity. This disk activity only applies to those IDE drives directly attached to the system board.
RST (Reset Button)
This connector can be attached to a momentary SPST switch. This switch is normally left open. When closed it will cause the mainboard to reset and run the POST (Power On Self Test).
PWR-LED (Power LED Connector)
This connector can be attached to an LED on the front panel of a computer case. The LED will illuminate while the computer is powered on.
PWR ON (Power Button)
This connector can be attached to a front panel power switch. The switch must pull the Power Button pin to ground for at least 50 ms to signal the power supply to switch on or off (the time required is due to internal debounce circuitry on the system board). At least two seconds must pass before the power supply will recognize another on/off signal.
PWRLED (3-Pin Power LED )
If there is a
SPEAKER (Speaker Header)
A front panel speaker can be connected to this connector. When you boot your computer, the speaker sounds a short “beep”. If there is something wrong during the Power On
12
