ASROCK IMB-142 Series Owner's Manual download pdf (Page 4)

Chassis Speaker Header Please connect the chassis

(4-pin SPEAKER 1)

speaker to this header.

(see p.1 No. 17)

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.

Chassis Fan Connectors Please connect the fan cables

(4-pin CHA_FAN1)

to the fan connectors and

(see p.1 No. 5)

match the black wire to the

ground pin.

(4-pin CHA_FAN2)

(see p.1 No. 4)

CPU Fan Connectors Please connect the CPU fan

(4-pin CPU_FAN1)

cable to the connector and

(see p.1 No. 3)

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 Fan Installation

Pin 1-3 Connected

GND

+12V

CPU_FAN_SPEED

FAN_SPEED_CONTROL

1 2 3 4

GND

+12V

CHA_FAN_SPEED

FAN_SPEED_CONTROL

GND

+12V

CHA_FAN_SPEED

FAN_SPEED_CONTROL

1 2 3 4 5 6

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ASROCK IMB-142 Series Owner's Manual Page 4

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