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10
ATX1: 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
PS ON#
5
Ground
15
Ground
6
+5V
16
Ground
7
Ground
17
Ground
8
PWRGD
18
+5V
9
+5VSB
19
+5V
10
+12V
20
+5V
CPU_FAN1/PWR_FAN1/CAS_FAN1: FAN Power Connectors
Pin
Signal Name
Function
1
GND
System Ground
2
+12V
Power +12V
3
Sense
Sensor
SPEAKER1: Internal speaker
Pin
Signal Name
1
VCC
2
NC
3
Buzzer
4
Signal
SJ1: Single-color LED header
Pin
Signal Name
1
ACPI LED
2
ACPI LED
3
5VSB
ACPI LED function:
S0
S1
S3
S4/S5
SJ1
1
Light
Blinking
Blinking
Dark
LSJ1: Single color LED header
(for OEM customers only)
Pin
Signal Name
1
5VSB
2
SUSLED-Y