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2.3.17 3-pin or 4-pin fan support selection jumper: J5
Signal
Description Pin
# Pin
# Signal
Description
GND 6 5 SYS_FAN_PWM
GND 4 3 CPU2_FAN_PWM
GND 2 1 CPU1_FAN_PWM
Pin # Corresponding
FAN FAN
Connector
1 & 2 CPU1 FAN J9
3 & 4 CPU2 FAN J37
5 & 6 Chassis FAN J47
Open: To support 3-pin auto fan
Closed (Default): To support 4-pin auto fan