ASROCK B650 PRO RS User Manual page 45

Chassis/Water Pump Fan Connectors
(4-pin CHA_FAN1/WP) (see p.6, No. 21)
(4-pin CHA_FAN2/WP) (see p.6, No. 17)
(4-pin CHA_FAN3/WP) (see p.6, No. 3)
(4-pin CHA_FAN4/WP) (see p.6, No. 24)
This motherboard provides four 4-Pin water cooling chassis fan connectors. If you
plan to connect a 3-Pin chassis water cooler fan, please connect it to Pin 1-3.
CHA_FAN4/WP
GND
FAN_VOLTAGE
CHA_FAN_SPEED
FAN_SPEED_CONTROL
1 2 3 4
40
CHA_FAN3/WP
CHA_FAN2/WP
GND
FAN_VOLTAGE
CHA_FAN_SPEED
FAN_SPEED_CONTROL
1 2 3 4
CHA_FAN1/WP
GND
FAN_VOLTAGE
CHA_FAN_SPEED
FAN_SPEED_CONTROL
1 2 3 4