TYAN TIGER I7525 User Manual page 14

Tiger i7525 (S2672)
3.2.1 - Clear CMOS Switch
3.2.2 - Fan Connector
This 4-pin fan connector supports a new standard fan with integrated fan speed control on the
fan itself for better fan life. 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 five 4-pin fan connectors on Tiger i7525 (S2672) 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. By default, the PWM signals are programmed to
fully turn on the fans.
Chapter 2: Board Installation
You can reset the CMOS settings by pressing
this button,
system/setup password or need to clear
system BIOS settings.
- Power off system and disconnect
both power connectors from
the motherboard
- Press
seconds to Clear CMOS
- Release the button
Reconnect power & power on system
Pin1: GND
Pin2: +12V
Pin3: Tachometer
Pin4: Fan PWM (Speed) Control
* PWM stands for Pulse Width Modulation
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