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Chapter 2: Hardware information
• System power LED lead (Green 3-pin PLED)
This 3-1 pin connector is for the system power LED. The LED lights up
when you turn on the system power, and blinks when the system is in
sleep mode.
• System warning speaker lead (Orange 4-pin SPEAKER)
This 4-pin connector is for the case-mounted speaker. It allows you to
hear system beeps and warnings.
• Reset switch lead (Blue 2-pin RESET)
This 2-pin connector is for the the case-mounted reset switch to reboot
the system without turning off the system power.
•ATX Power switch / Soft-Off switch lead (Yellow 2-pin PWRSW)
This connector is for the system power switch. 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 four seconds turns the
system OFF.
• Hard disk activity LED (Red 2-pin IDE_LED)
This connector supplies power to the hard disk activity LED. Any read
or write activity of an IDE device causes this LED to light up.