20

ASRock  H61M-DG3/USB3  Motherboard

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Chassis Speaker Header   

Please connect the chassis    

(4-pin SPEAKER 1)

speaker to this header.

(see p.2  No. 13)

CPU Fan Connectors 

Please connect the CPU fan 

(4-pin CPU_FAN1)

cable to the connector and 

(see p.2  No. 3)

match the black wire to the    

ground 

pin.

Chassis and Power Fan Connectors 

Please connect the fan cables  

(4-pin CHA_FAN1)

to the fan connectors and  

(see p.2  No. 9)

match the black wire to the    

ground 

pin.

(3-pin PWR_FAN1)
(see p.2  No. 25)

       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 

RESET (Reset Switch): 

Connect to the reset switch on the chassis front panel. Press the reset 
switch to restart the computer if the computer freezes and fails to perform a 
normal restart.

PLED (System Power LED): 

Connect to the power status indicator on the chassis front panel. The LED 
is on when the system is operating. The LED keeps blinking when the sys-
tem is in S1 sleep state. The LED is off when the system is in S3/S4 sleep 
state or powered off (S5).

HDLED (Hard Drive Activity LED): 

Connect to the hard drive activity LED on the chassis front panel. The LED 
is on when the hard drive is reading or writing data.

The front panel design may differ by chassis. A front panel module mainly 
consists of power switch, reset switch, power LED, hard drive activity LED, 
speaker and etc. When connecting your chassis front panel module to this 
header, make sure the wire assignments and the pin assign-ments are 
matched correctly.

GND

+12V

CPU_FAN_SPEED

FAN_SPEED_CONTROL

4  3  2  1

PWR_FAN_SPEED

GND

+12V