12
Installing the Motherboard
Front Panel Connector
The front panel connector (PANEL1) provides a standard set of switch and LED connec-
tors commonly found on ATX or micro-ATX cases. Refer to the table below for informa-
tion:
Pin Signal Function Pin Signal Function
1 HD_LED_P Hard disk LED(+) 2 FP PWR/SLP *MSG LED(+)
3 HD_LED_N Hard disk LED(-)
5 RST_SW_N Reset Switch(-)
7 RST_SW_P Reset Switch(+)
9 RSVD Reserved
4 FP PWR/SLP *MSG LED(-)
6 PWR_SW_P Power Switch(+)
8 PWR_SW_N Power Switch(-)
10 Key No pin
* MSG LED (dual color or single color)
Reset Switch
Supporting the reset function requires connecting pin 5 and 7 to a momentary-contact
switch that is normally open. When the switch is closed, the board resets and runs POST.
Power Switch
Supporting the power on/off function requires connecting pins 6 and 8 to a momentary-
contact switch that is normally open. The switch should maintain contact for at least 50 ms
to signal the power supply to switch on or off. The time requirement is due to internal de-
bounce circuitry. After receiving a power on/off signal, at least two seconds elapses before
the power supply recognizes another on/off signal.
Hard Drive Activity LED
Connecting pins 1 and 3 to a front panel mounted LED provides visual indication when data
is being read from or written to the hard drive. To make the LED function properly, an IDE
drive should be connected to the onboard IDE interface correctly. The LED also shows the
activity for hard drives connected to the SATA cnnectors.
Power/Sleep/Message waiting LED
Connecting pins 2 and 4 to a single or dual-color, front panel mounted LED provides power
on/off, sleep, and message waiting indication.
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