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2.3.12 Power On header (PWR ON)
This header can be connected to chassis’s power switch. Because of debounce circuitry on the
motherboard, the switch must be pressed for at least 50 ms to signal the power supply to switch on
or off. At least two seconds must pass before the power supply will recognize another on/off
signal.
Note: Hold the power on switch in for four seconds will force the system switch off.
2.3.13 Front panel connector (J34)
This connector contains several headers, which are connected to button or switch located on front
panel of the chassis.
2.3.13.1 IDE LED header (IDE LED)
The 2-pin IDE LED header is located on pins 5--6 (marked as IDE LED) of the front panel
connector. It can be connected to an LED on the chassis, which will light up when IDE
devices is working.
Signal of IDE LED header
Pin 5
Anode (+)
Pin 6
Cathode (-)
2.3.13.2 SCSI LED header (SCSI LED)
The 2-pin SCSI LED header is located on pins 7--8 (marked as SCSI LED) of the front
panel connector. It can be connected to an LED on the chassis, which will light up when
SCSI devices is working.
Signal of SCSI LED header
Pin 7
Anode (+)
Pin 8
Cathode (-)
2.3.13.3 RESET header (RESET)
The 2-pin reset header is located on pins 9--10 (marked as RESET) of the front panel
connector. It can be connected to a momentary type switch that is normally open. When the
switch is close, the system will reset.
Signal of RESET header
Pin 9
Ground
Pin 10
RESET
S
S