TYAN THUNDER I7522 Manual page 25

Thunder i7520 / Thunder i75 20 R
3.1.1 5 - Fan Connector
Pin1: GND
Pin2: +12V
Pin3: Tachometer
Pin4: Fan PWM (Speed) Control
* PWM stands for Pulse Width Modulation
This 4 -pin fan connector supports a new standard of fan connector for better fan life.
It has an integrated fan speed control on the fan itself. The first 3 pins of this 4- pin fan
connector are backward compatible with a traditional 3- pin fan connector without PWM fan
speed control. (Pin4 will be unconnected for connecting a 3- pin fan).
There are three 4-pin fan connectors (CPU FAN1, CPUFAN2 and FAN 1) and six 3- pin fan
connectors (FAN2, FAN3, FAN4, FAN5, FAN6 and FAN 7) on the Thunder i7522 S5362 board.
Use these connectors to connect chassis and processor cooling fans to your motherboard.
Cooling fans can keep the system stable and reliable for its product life.
FAN PWM Control
CPUFAN1 Yes (ADT7463 Pin24/PWM1)
CPUFAN2 Yes (ADT7463 Pin10/PWM2)
FAN1 Yes (ADT7463 Pin13/ PWM3)
FAN2 No
FAN3 Yes (SIO Pin116/FANPWM1)*
FAN4 Yes (SIO Pin116/FANPWM1)*
FAN5 No
FAN6 No
FAN7 Yes (SIO Pin115/FANPWM2)
* FAN3 and FAN4 are shared the same PWM control.
Chapter 3: Board Installation
Tachometer Reading
Yes (ADT7463 Pin11/TACH1)
Yes (ADT7463 Pin12/TACH2)
Yes (ADT7463 Pin9/TACH3)
No
Yes (SIO Pin111/FANIO3)
Yes (SIO Pin113/FANIO1)
No
No
Yes (SIO Pin112/FANIO2)
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