ASRock K8A780LM [20/84] English english english english english

2020

ASRock K8A780LM Motherboard

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Chassis Speaker Header Please connect the chassis

(4-pin SPEAKER 1) speaker to this header.

(see p.2 No. 8)

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

System Panel Header This header accommodates

(9-pin PANEL1) several system front panel

(see p.2 No. 14) functions.

1. High Definition Audio supports Jack Sensing, but the panel wire on

the chassis must support HDA to function correctly. Please follow the

instruction in our manual and chassis manual to install your system.

2. If you use AC’97 audio panel, please install it to the front panel audio

header as below:

A. Connect Mic_IN (MIC) to MIC2_L.

B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.

C. Connect Ground (GND) to Ground (GND).

D. MIC_RET and OUT_RET are for HD audio panel only. You don’t

need to connect them for AC’97 audio panel.

E. Enter BIOS Setup Utility. Enter Advanced Settings, and then select

Chipset Configuration. Set the Front Panel Control option from

[Auto] to [Enabled].

Chassis and Power Fan Connectors Please connect the fan cables

(3-pin CHA_FAN1) to the fan connectors and

(see p.2 No. 11) match the black wire to the

ground pin.

(3-pin PWR_FAN1)

(see p.2 No. 31)

CPU Fan Connector Please connect the CPU fan

(4-pin CPU_FAN1) cable to this connector and

(see p.2 No. 5) match the black wire to the

ground pin.

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