Elitegroup ST945GM (V1.0) - Manual (Page 17)

11
Installing the Motherboard
ATX_POWER1: ATX 20-pin Power Connector
Pin Signal Name Pin Signal Name
1 +3.3V 11 +3.3V
2 +3.3V 12 -12V
3 Ground 13 Ground
4 +5V 14 PSON#
5 Ground 15 Ground
6 +5V 16 Ground
7 Ground 17 Ground
8 PWROK 18 -5V
9 AUX5V 19 +5V
10 +12V 20 +5V
Front Panel Header
The front panel header (PANEL1) provides a standard set of switch and LED headers
commonly found on ATX or Micro ATX cases. Refer to the table below for information:
Pin Signal Function Pin Signal Function
1 HLED+ Hard disk LED(+) 2 LEDG *MSG LED (+)
3 HLED - Hard disk LED (-)
5 GND Ground
7 REST Reset Switch
9 RSVD Reserved
4 LEDY *MSG LED (-)
6 FP_PSIN Power Switch
8 3VSB Power Switch
10 Key No pin
* MSG LED (dual color or single color)
Hard Drive Activity LED
Connecting pins 1 and 3 to a front panel mounted LED provides visual indication that data
is being read from or written to the hard drive. For the LED to function properly, an IDE
drive should be connected to the onboard IDE interface. The LED will also show activity
for devices connected to the SCSI (hard drive activity LED) connector.
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.