ASROCK B650 PG LIGHTNING - Page 52

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CPU Fan Connector
(4-pin CPU_FAN1) (see p.6, 7, No. 3)
is 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.
CPU_FAN1
CPU_F
+12V
GND
AN_SPEED
FAN_SPEED_CONTROL
4 3 2 1