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15. LPT header
The LPT (Line Printing Terminal) header supports devices such
as a printer. LPT standardizes as IEEE 1284, which is the parallel
port interface on IBM PC-compatible computers.
16. System Management Bus header
The System Management Bus (SMBus) connector allows you to connect a
SMBus device. This connector is generally used for communication with the
system and power management-related tasks.
17. Speaker header
The 4-pin header is for the chassis-mounted system warning speaker. The
speaker allows you to hear system beeps and warnings.
18. 10-1 pin System panel header
This header supports several chassis-mounted functions.
•
System power LED (2-pin +PWR_LED-)
This 2-pin header is for the system power LED. Connect the chassis
power LED cable to this header. 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 header is for the HDD Activity LED. Connect the HDD
Activity LED cable to this header. The HDD LED lights up or flashes
when data is read from or written to the HDD.
•
Power button/Soft-off button (2-pin PWR_BTN)
This header is for the system power button.
•
Reset button (2-pin RESET)
This 2-pin header is for the chassis-mounted reset button for system reboot without
turning off the system power.
ASUS Pro A520M-C II
PIN 1
SMBUS
PIN 1
SPEAKER
PIN 1
F_PANEL
+PWR_LED-
PWR_BTN
PIN 1
+HDD_LED- RESET
1-5
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