Chapter 2
XT4500
7
Hard Disk LED Connector (HDD_LED)
The connector connects to the case’
s IDE indicator LED indicating the activity status of IDE
hard disk. The connector has an orientation. If one way doesn’
t work, try the other way.
Reset Switch (RESET)
The connector connects to the case’
s reset switch. Press the switch once, the system
resets.
ATX 12V Power Supply Connector & Power Switch (POWER Switch)
The power switch (POWER SW) should be connected to a momentary switch. When
powering up your system, first turn on the mechanical switch of the power supply (if one
is provided), then push once the power switch. When powering off the system, you
needn’
t turn off the mechanical switch, just push once the power switch. XT4500 series
mainboard only support ATX12V power.
If you change “Soft-off by PWR-BTTN” from default “Instant-off”
to “Delay 4 Sec” in the “POWER MANAGEMENT SETUP” section
of the BIOS, the power switch should be pressed for morethan
4 seconds before the system powers down.
A
Note:
POWER SW
ATX Power Supply Connector
20
1
12V
5VSB
5V
GND
3.3V
GND
5V
GND
PS-OK
3.3V
5V
5 V
-5V
GND
PS-ON
-12V
3.3V
GND
GND
GND
12V
12V
GND
GND
+12V
Power Supply Connector
1
