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Pin 1 : Power GOOD A
CN18 : LED Board Connector
Pin 1 : GND
Pin 3 : +12V Signal
Pin 5 : -12V Signal
Pin 7 : Power Good Signal
Pin 9 : Temperature Good Signal
Pin 11 : Fan Good Signal
Pin 13 : NC
Pin 15 : 5VSB Signal
CN19 : Connector bank from CPU card
Pin 1 : HDD LED Signal
Pin 3 : I2C Clock
Pin 5 : I2C Data
CN20 : Connector bank to Chassis
Pin 1 : ATX Momentary switch
Pin 3 : GND
Pin 5 : Watch Dog IN
J1 : External Speaker
Pin 1 : Buzzer
IACP-4000 User Manual
Pin 2 : GND
Pin 2 : +5V Signal
Pin 4 : -5V Signal
Pin 6 : HDD Signal
Pin 8 : Power Fail Signal
Pin 10 : Temperature Fail Signal
Pin 12 : FAN Fail Signal
Pin 14 : +3.3V Signal
Pin 2 : ATX soft power switch
Pin 4 : ATX soft power switch(-)
Pin 6 : System Reset Signal
Pin 2 : ATX Momentary switch(-)
Pin 4 : System Reset Signal
Pin 6 : Watch Dog OUT
Pin 2 : +5V
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