User manual

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Chapter 1: Product Introduction
9. System panel connector (20-5 pin PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
• SystempowerLED(4-pin+PWR_LED-)
This4-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.
• HarddiskdriveactivityLED(2-pin+HDD_LED-)
This2-pinconnectorisfortheHDDActivityLED.ConnecttheHDDActivityLEDcable
tothisconnector.TheHDDLEDlightsuporasheswhendataisreadfromorwritten
totheHDD.
• 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.
• ATXpowerbutton/soft-offbutton(2-pinPWR_SW)
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 operating
system settings. Pressing the power switch for more than four seconds while the
systemisONturnsthesystemOFF.
• 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.