Biostar H81MHV3 3.0 - Инструкция по эксплуатации - Страница 16

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Chapter 2: Hardware installation

F_USB20_1/ F_USB20_2: Header for USB 2.0 Ports at Front Panel 

This header allows user to add additional USB ports on the PC front panel, and also can be 

connected with a wide range of external peripherals.

Pin Assignment
1

+5V (fused)

2

+5V (fused)

3

USB-

4

USB-

5

USB+

6

USB+

7

Ground

8

Ground

9

Key

10

NC

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 Left 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

Left line in

9

LFT Line Out

10

Jack Sense

10 LFT Line Out

Note

»

   It is recommended that you connect a high-definition front panel audio module to this connector to 

avail of the motherboard’s high definition audio capability.

»

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

cable. The function can be found via O.S. Audio Utility.

COM: Serial Port Header

The motherboard has a serial port header for connecting RS-232 Port.

Pin Assignment
1

Carrier detect

2

Received data

3

Transmitted 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