ASROCK 990FX Extreme9 User Manual page 40

Chassis Speaker Header
(4-pin SPEAKER 1)
(see p.14 No. 19)
Power LED Header
(3-pin PLED1)
(see p.14 No. 30)
Chassis and Power Fan Connectors
(4-pin CHA_FAN1)
(see p.14 No. 20)
(3-pin CHA_FAN2)
(see p.14 No. 6)
(3-pin CHA_FAN3)
(see p.14 No. 24)
(3-pin PWR_FAN1)
(see p.14 No. 9)
CPU Fan Connectors
(4-pin CPU_FAN1)
(see p.14 No. 4)
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
1
SPEAKER
DUMMY
+5V DUMMY
1
PLED-
PLED+
PLED+
GND
FAN_SPEED_CONTROL
+12V
CHA_FAN_SPEED
GND
+12V
CHA_FAN_SPEED
GND
+12V
CHA_FAN_SPEED
+12V
GND PWR_FAN_SPEED
FAN_SPEED_CONTROL
CPU_FAN_SPEED
+12V
GND
1 2 3 4
40
Please connect the chassis
speaker to this header.
Please connect the chassis
power LED to this header to
indicate system power status.
The LED is on when the system
is operating. The LED keeps
blinking in S1 state. The LED is
off in S3/S4 state or S5 state
(power off).
Please connect the fan cables
to the fan connectors and
match the black wire to the
ground pin. CHA_FAN1/2/3 fan
speed can be controlled through
UEFI or AXTU.
Please connect the CPU fan
cable to the connector and
match the black wire to the
ground pin.
Pin 1-3 Connected
3-Pin Fan Installation