Name: Biostar A520MH 3.0
Brand: Biostar
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20 | Chapter 2: Hardware installaon

F_AUDIO: Front Panel Audio Header

This header allows user to connect the chassis-mount front panel audio I/O which supports HD

and AC’97 audio standards.

HD Audio AC’97

Pin Assignment Pin Assignment

1 Mic Le in 1 Mic In

2 Ground 2 Ground

3 Mic Right in 3 Mic Power

4 GPIO 4 Audio Power

5 Right line in 5 RT Line Out

6 Jack Sense 6 RT Line Out

7 Front Sense 7 Reserved

8 Key 8 Key

9 Le line in 9 LFT Line Out

10 Jack Sense 10 LFT Line Out

Note

It is recommended that you connect a high-denion front panel audio module to this connector to

avail of the motherboard’s high denion audio capability.

Please try to disable the “Front Panel Jack Detecon” if you want to use an AC’97 front audio output

cable. The funcon can be found via O.S. Audio Ulity.

COM1: Serial Port Connector

The motherboard has a serial port header for connecng RS-232 Port.

Pin Assignment

1 Carrier detect

2 Received data

3 Transmied data

4 Data terminal ready

5 Signal ground

6 Data set ready

7 Request to send

8 Clear to send

9 Ring indicator

10 Key

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Biostar A520MH 3.0 Specifications

General