Intel LH500 user manual Power LED

Power LED:	This 3-pin connector attaches to the power LED.
HDD Activity LED:	This 2-pin connector attaches to the LED of the hard disk. The LED lights up
	when HDD is active.
Power Switch:	This 2-pin connector attaches to the power button of the system.
Reset Switch:	This 2-pin connector attaches to the case-mounted reset switch for rebooting your
	computer without turning on/off your power switch.
ACPI Sleep Switch:	This 2-pin connector connects to the switch that can take the system into standby
	mode when pressed.
NMI to CPU Switch:	This 1-pin connector connects to the switch that send Non-Maskable Interrupt to
	the CPU. User can customize the button to perform a particular function.
5 VSB:	This connector provides the user with power to any extra devices that uses 5 volt
	power.
Cooling Fault LED:	This connector connects to the LED that lights up when a problem arises with
	cooling system.
System Fault LED:	This connector connects to the LED that lights up when a problem arises with the
	system.
LAN#1 Activity LED:	This connector connects to the LED that lights up when there is activity on the
	LAN 1 port.
SMBus SDA:	A private bus to BMC chip for serial data, for use with BMC only.
SMBus SCL:	A private bus to BMC chip for serial clock, for use with BMC only.
Chassis Intrusion:	This connects to the mechanical switch that indicates whether the chassis had
	been opened. User can activate it if desired.
LAN#2 Activity LED:	This connector connects to the LED that lights up when there is activity on the
	LAN 2 port.

# Pin-27 to Pin-34 are reserved for OEM purpose

37