ECS L4IBMGL6 1.0 Manual page 14

ATX12: ATX 12V Power Connector
Pin Signal Name
1 Ground
2 Ground
3 +12V
4 +12V
CPUFAN1/CASFAN1: FAN Power Connectors
Pin Signal Name
1 GND
2 +12V
3 Sense
SPEAKER1: Internal speaker
Pin Signal Name
1 Signal
2 Key
3 NA
4 VCC
Function
System Ground
Power +12V
Sensor
10