Asus PCH-DL - Manual (Page 50)

2-32 Chapter 2: Hardware information
• System Power LED (3-pin PLED)
This lead connects to the system power LED. The LED lights up when
you turn on the system power, and blinks when the system is in sleep
mode.
• Message LED (2-pin MLED)
This lead connects to the message LED cable on the front panel and
indicates the booting status. The LED blinks when the system is in the
boot process until the operating system is loaded.
• System warning speaker (4-pin SPKR)
This lead connects to the case-mounted speaker and allows you to
hear system beeps and warnings.
• Hard disk activity (2-pin HD_LED)
This lead connects the HDD LED cable. The read or write activities of
the device connected to the any of IDE connectors cause the IDE LED
to light up.
• Power switch / Soft-off switch (2-pin PWR_SW)
This lead connects a switch that controls the system power. Pressing
the power switch turns the system between ON and SLEEP, or ON and
SOFT OFF, depending on the BIOS or OS settings. Pressing the
power switch while in the ON mode for more than 4 seconds turns the
system OFF.
• Reset switch (2-pin RESET)
This lead connects to the case-mounted reset switch for rebooting the
system without turning off the system power.
16. System panel connector (20-pin PANEL)
This connector accommodates several system front panel functions.
PCH-DL
PCH-DL System Panel Connector
* Requires an ATX power supply.
PLED-
MLED
PWR
PLED+ +5V Speaker
Power LED
Ground +5VSB
Reset SW
Message LED
Ground
Reset
HD_LED+ HD_LED-
ATX Power
Switch*
LAN_LINK
LAN_ACT
Speaker
Connector