ASROCK FM2A75M-ITX User Manual download pdf (Page 31)

Chassis Speaker Header Please connect the chassis

(4-pin SPEAKER 1)

speaker to this header.

(see p.14 No. 4)

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.

Chassis Fan Connector Please connect the fan cable

(4-pin CHA_FAN1)

to the fan connector and

(see p.14 No. 6)

match the black wire to the

ground pin.

GND

+12V

CHA_FAN_SPEED

FAN_SPEED_CONTROL

CPU Fan Connectors Please connect the CPU fan

(4-pin CPU_FAN1)

cable to the connector and

(see p.14 No. 1)

match the black wire to the

ground pin.

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 CPU_FAN2)

(see p.14 No. 2)

Pin 1-3 Connected

3-Pin Fan Installation

GND

+ 12V

CPU_FAN_SPEED

FAN_SPEED_CONTROL

1 2 3 4

GND

+ 12V

CPU_FAN_SPEED

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 64 65

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ASROCK FM2A75M-ITX User Manual Page 31

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