User guide
9. System panel connector (20-pin PANEL1)
This connector supports several chassis-mounted functions.
1. System power LED (3-pin PLED)
This 3-pin connector is for the system power LED. Connect the chassis
power LED cable to this connector. The system power LED lights up
when you turn on the system power, and blinks when the system is in
sleep mode.
2. Message LED (2-pin MLED)
the front message LED. The message LED is controlled by Hardware
monitor to indicate an abnormal event occurance.
3. System warning speaker (4-pin SPEAKER)
speaker. The speaker allows you to hear system beeps and warnings.
4. Hard disk drive activity LED (2-pin HDDLED)
when data is read from or written to the HDD.
5. SSI power button/soft-off button (2-pin PWRSW)
This connector is for the system power button. Pressing the power
button turns the system on or puts the system in sleep or soft-off mode
than four seconds while the system is ON turns the system OFF.
6. Reset button (2-pin RESET)
reboot without turning off the system power.