Hardware Installation

SY-P4I845PE

(2) Chassis Cooling Fan (CHAFAN1, CHAFAN2)

Some chassis also feature a cooling fan. This Motherboard features a CHAFAN connector to provide 12V power to the chassis fan. Connect the cable from the chassis fan to the CHAFAN 3-pin connector. Install according to the following pin assignment:

Classis Cooling Fan

(CHAFAN1, CHAFAN2)

CHAFAN Pin Assignment

CHAFAN1

1

2

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SENSOR

 

 

12V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHAFAN2

32

NC 12V

1

GND

Note: CPU cooling fan must be installed to prevent CPU from overheating and ensure system stability. Chassis cooling fan is optional, depending on whether there is cooling fan in your chassis.

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SOYO SY-P4I845PE user manual Chassis Cooling Fan CHAFAN1, CHAFAN2