User's Manual

1-26
Chapter 1: Product Introduction
7. System panel connector (20-3 pin PANEL)
Thisconnectorsupportsseveralchassis-mountedfunctions.
• SystempowerLED(3-1pinor2-pinPLED)
This3-1pinor2-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.
• ATXpowerbutton/soft-offbutton(2-pinPWRSW)
This connector is for the system power button.
• Resetbutton(3-pinRESET)
This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.
• Speakerconnector(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.
• Chassisintrusionconnector(2-pinCHASSIS)
Thisconnectorisforachassis-mountedintrusiondetectionsensororswitch.Connect
one end of the chassis intrusion sensor or switch cable to this connector. The chassis
intrusionsensororswitchsendsahigh-levelsignaltothisconnectorwhenachassis
componentisremovedorreplaced.Thesignalisthengeneratedasachassisintrusion
event.