User`s manual

SBC86831 Series All-In-One Mini ITX Board User’s Manual

Jumpers and Connectors

2.4.15 Internal Audio Connector: CN21

The SBC86831 supports internal audio interface. CN21 is a 5pin-

header connector commonly used for the audio. After install onboard

audio driver, you may connect speaker to Line Out jack, microphone to

MIC in jack.

Pin Signal

1 LINE_OUT_L

2 GND

3 LINE_OUT_R

4 GND

5 MIC_IN

CN21

2.4.16 ATX Power Connector: ATX1

With the use of the power connector, the power supply can supply

enough stable power to all the components on the motherboard. Before

connecting the power connector, please make sure that all components

and devices are properly installed. Align the power connector with its

proper location on the motherboard and connect tightly.

If you use a 20-pin ATX power supply, please remove the small cover

on the power connector on the motherboard before plugging in the

power cord; otherwise, please do not remove it.

Pin Signal Pin Signal

1 3.3V 11 3.3V

2 3.3V 12 -12V

3 GND 13 GND

4 5V 14 PS_ON

5 GND 15 GND

6 5V 16 GND

7 GND 17 GND

8 PW_OK 18 -5V

9 5V_SB 19 5V

10 12V 20 5V

ATX1

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