Asus M4A78LT-M - Manual (Page 36)

5. System panel connector (20-8 pin PANEL)
This connector supports several chassis-mounted functions.
M4A78LT-M
PIN 1
* Requires an ATX power supply
PLED SPEAKER
PLED
+
PLED
-
+5
V
Groun
d
Groun
d
Speake
r
IDE_LED
+
IDE_LED
-
PWR
Groun
d
Rese
t
Groun
d
PANEL
IDE_LED PWRSW RESET
M4A78LT-M System panel connector
• System power LED (2-pin PLED)
This 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 IDE_LED)
This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable
to this connector. The IDE LED lights up or flashes 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 PWRSW)
This connector is for the system power button.
• 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.
Chapter 1: Product introduction 1-26