ASROCK A520M-HDVP 2.0 User Manual page 41

Chassis Fan Connector
(4-pin CHA_FAN2) (see p.6, No. 17)
Please connect fan cables to the fan connector and match the black wire to the
ground pin.
CPU Fan Connector
(4-pin CPU_FAN1) (see p.6, No. 2)
This motherboard provides a 4-Pin CPU fan (Quiet Fan) connector. If you plan to
connect a 3-Pin CPU fan, please connect it to Pin 1-3.
38
CHA_FAN2
FAN_SPEED_CONTROL
CHA_FAN_SPEED
+12V
GND
CPU_FAN1
+12V
CPU_FAN_SPEED
GND
FAN_SPEED_CONTROL
1 2 3 4
4
3
2
1