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F_AUDIO1: 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
» 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.
J_COM1/ 2: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
J_PRINT1: Printer Port Connector
This header allows you to connector printer on the PC.
J4025NHU / J4125NHU
HD Audio
Pin
Assignment
1
Mic Left in
2
Ground
3
Mic Right in
4
GPIO
5
Right line in
6
Jack Sense
7
Front Sense
8
Key
9
Left line in
10
Jack Sense
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
Pin
Assignment
1
-Strobe
2
-ALF
3
Data 0
4
-Error
5
Data 1
6
-Init
7
Data 2
8
-Scltin
9
Data 3
10
Ground
11
Data 4
12
Ground
13
Data 5
Chapter 2: Hardware installation | 13
AC'97
Pin Assignment
1
Mic In
2
Ground
3
Mic Power
4
Audio Power
5
RT Line Out
6
RT Line Out
7
Reserved
8
Key
9
LFT Line Out
10
LFT Line Out
Pin Assignment
14 Ground
15 Data 6
16 Ground
17 Data 7
18 Ground
19 -ACK
20 Ground
21 Busy
22 Ground
23 PE
24 Ground
25 SCLT
26 Key
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