Biostar B660MX-E PRO Manual page 22

F_AUDIO: Front Panel Audio Header
This header allows user to connect the chassis-mount front panel audio I/O which supports
HD.
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.
COM1: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
I
B660MX-E PRO
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
Chapter 2: Hardware installation | 21
B660MH-E PRO