ASRock H55M/USB3 R2.0 User Manual - Page 22

Chassis and Power Fan Connectors

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Page 22 highlights

System Panel Header (9-pin PANEL1) (see p.11 No. 17) PLED+ PLEDPWRBTN# GND 1 DUMMY RESET# GND HDLEDHDLED+ Chassis Speaker Header (4-pin SPEAKER 1) (see p.11 No. 21) 1 SPEAKER DUMMY DUMMY +5V Chassis and Power Fan Connectors (4-pin CHA_FAN1) (see p.11 No. 22) FAN_SPEED_CONTROL GND +12V CHA_FAN_SPEED (3-pin PWR_FAN1) (see p.11 No. 4) PWR_FAN_SPEED +12V GND This header accommodates several system front panel functions. Please connect the chassis speaker to this header. Please connect the fan cables to the fan connectors and match the black wire to the ground pin. CPU Fan Connector (4-pin CPU_FAN1) (see p.11 No. 3) Please connect a CPU fan cable to this connector and match the black wire to the ground pin. 1 2 3 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. Pin 1-3 Connected 3-Pin Fan Installation 22

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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.
3-Pin Fan Installation
Pin 1-3 Connected
CPU Fan Connector
Please connect a CPU fan cable
(4-pin CPU_FAN1)
to this connector and match
(see p.11
No. 3)
the black wire to the ground pin.
1
2
3
4
Chassis and Power Fan Connectors
Please connect the fan cables
(4-pin CHA_FAN1)
to the fan connectors and
(see p.11
No. 22)
match the black wire to the
ground pin.
(3-pin PWR_FAN1)
(see p.11
No. 4)
GND
+12V
CHA_FAN_SPEED
FAN_SPEED_CONTROL
PWR_FAN_SPEED
GND
+12V
GND
PWRBTN#
PLED-
PLED+
DUMMY
RESET#
GND
HDLED+
HDLED-
1
System Panel Header
This header accommodates
(9-pin PANEL1)
several system front panel
(see p.11
No. 17)
functions.
Chassis Speaker Header
Please connect the chassis
(4-pin SPEAKER 1)
speaker to this header.
(see p.11
No. 21)
+5V
DUMMY
DUMMY
SPEAKER
1