User Manual

2-27
KNPA-U16
9. System panel connector (20-1 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)
This 2-pin connector is for the message LED cable that connects to the front
messageLED.ThemessageLEDiscontrolledbytheBMCtoindicatean
abnormal event occurrence.
3. System warning speaker (4-pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
4. Hard disk drive activity LED (2-pin HDLED)
 This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivityLED
cabletothisconnector.TheLEDlightsuporasheswhendataisreadfromor
writtentotheHDD.
5. ATX 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dependingontheBIOS
settings. Pressing the power switch for more than four seconds while the system
is ON turns the system OFF.
6. Reset button (2-pin RESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot
without turning off the system power.