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2. I/O Header Connector Description
2-1. Motherboard Internal Connector
ISA (CN17)
PCI (CN14, CN13, CN12)
Modem Sound (CN46, CN70)
Video Sound (CN45)
CD Sound (CN43, CN44)
AGP Slot (CN21)
PC/PCI (CN23)
LAN Wakeup (CN50)
CPU FAN connector (CN53)
1 2 3
CN53
System FAN connector (CN54)
1 2 3
CN54
Chassis FAN connector (CN55)
1 2 3
Joystick & USB Header (CON1,CN71)
Slot 1 (CN1)
Modem Wakeup (CN51)
Chassis FAN(CN55)
Aux.-Indicator Header (CN48)
Indicator Header (CN49)
System FAN (CN54)
Pin number
1
2
3
Pin number
1
2
3
Pin number
1
2
3
9 / 12
DIMM Module
ATX PSU connector (CN7)
Sec-IDE connector (CN11)
Pri-IDE connector (CN10)
FDD connector (CN9)
CPU FAN(CN53)
Chassis Connector (CN52)
Signal description
GND
FAN power
Tachometer (speed)
Signal description
GND
FAN power
Tachometer (speed)
Signal description
GND
FAN control
Tachometer (Speed)
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