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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.
Note
» When using the front HD audio jack and plug in the headset, the rear sound will be automatically Disabled.
» 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.
COM1: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
B660MX-E
HD Audio
AC'97
Pin
Assignment
Pin Assignment
1
Mic Left in
1
2
Ground
2
3
Mic Right in
3
4
GPIO
4
5
Right line in
5
6
Jack Sense
6
7
Front Sense
7
8
Key
8
9
Left line in
9
10
Jack Sense
10
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
Chapter 2: Hardware installation | 19
I
B660MH-E
Mic In
Ground
Mic Power
Audio Power
RT Line Out
RT Line Out
Reserved
Key
LFT Line Out
LFT Line Out
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