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PX915P4C/ PX915G4C Series
Front Panel Indicator: SW/LED、PWRLED、SPEAKER
HD LED (Hard Drive LED Connector/ red)
This connector can be attached to an LED on the front panel of a computer case. The LED will flicker
during any disk activity.
RST SW (Reset Connector/ blue)
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 (2-pin Power LED/ green)
The mainboard provides a two-pin power LED connector. If there is a 2-pin power LED cable on the
front panel of your computer case, you can attach it to the 2-pin power LED connector. The LED will
illuminate showing that the computer is powered on.
PWR ON (Power Button/ orange)
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.
PWR-LED (3-Pin Power LED/ green)
These mainboards provides a 3-pin power LED connector. If there is a 3-pin power LED cable on the
front panel of a computer case, you can attach it to the 3-pin power LED connector. The LED will
illuminate showing that the computer is powered on.
SPEAKER (Speaker/ violet)
A front panel speaker can be attached to this connector. This speaker is used for audible beeps during
the boot up process (Power On Self-Test). A single "short beep" is normal, while "irregular beeps"
signal problems.
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