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ATX12: ATX 12V Power Connector
Pin
Signal Name
1
+12V
2
+12V
3
Ground
4
Ground
CPUFAN1/PWRFAN1/CASFAN1: FAN Power Connectors
Pin
Signal Name
1
GND
2
+12V
3
Sense
SPEAKER1: Internal speaker
Pin
Signal Name
1
Signal
2
Key
3
Ground
4
VCC
SJ1: Single color LED header
Pin
Signal Name
1
ACPI LED
2
ACPI LED
3
SB5V
ACPI LED function:
S0
SJ1
1
Light
LSJI: Single color LED header
Pin
Signal Name
1
5VSB
2
SUSLED-Y
ACPI LED function:
S0
LSJ1
Dark
Function
System Ground
Power +12V
Sensor
Function
MSG LED (-) green
MSG LED (-) green
Power LED (+)
S1
S3
Blinking
Blinking
(for OEM customers only)
S1
S3
Dark
Light
12
S4/S5
Dark
S4/S5
Dark
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