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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