User Manual
Chapter 2
18
H81H3-M3S USER MANUAL
7. COM2: Onboard Serial Port Header
Connect a serial port extension bracket to this header to add a serial port to your
system.
The front panel audio header allows the user to install auxiliary front-oriented
microphone and line-out ports for easier access. This header supports HD audio by
default. If you want connect an AC
’ 97 front panel audio to HD onboard headers,
please set as below picture.
8. F_AUDIO: Front Panel Audio Header
If you use AC’ 97 Front Panel, please tick off the option of “ Disabled Front Panel
Detect ” . If you use HD Audio Front Panel, please don’ t tick off “Disabled Front Panel
Detect ” .
AC’ 97 Audio Configuration: To enable the front panel audio connector to
support AC97 Audio mode.