Chapter 2
XV915
7
Hard Disk LED Connector (HD_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.
Speaker Connector (SPEAKER)
The connector can be connected to the speaker on the case.
ACPI LED Connector (ACPI_LED)
The ACPI LED is a dual-color light with three pins. Pin1and Pin2 drive different color
lights. If Pin1 drives the orange light , then, Pin2 drives the green light, the following
status will come out. When the system is in S0 status, the LED is green on. When the
system is in S1 status, the LED is green blink. When the system is in S3 status, the LED
is orange on. When the system is in S4, S5 status, the LED is off.
ATX 12V Power Supply Connector & Power Switch (POWER SW)
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.
Note: please pay attention to orientation and sequence of pins when using 20 pins ATX
power supply connector.
POWER SW
ATX Power Supply Connector
1
-5V/NC
PWR OK
+5VDC
PS-ON
GND
+3.3VDC
+12VDC
12V
12V
GND
GND
+12V
Power Supply Connector
1
GND
5VSB
GND
+3.3VDC
GND
GND
GND
+5VDC
+3.3VDC
+5VDC
+5VDC
+12VDC
+3.3VDC
-12VDC
GND
+5VDC
GND
I
f you change “Soft-off by PWR-BTTN” from default “Instant-off”
to “Delay 4 Sec” in the “POWER MANAGEMENT SETUP” sec-
tion of the BIOS, the power switch should be pressed for morethan
4 seconds before the system powers down.
Note:
