How to disable back panel audio output
while you plug in an ear phone on front panel
Procedures
Refer to the pin definition in user manual, connect F_AUDIO1 header on the
motherboard to the front panel of the case.
Install “Audio Driver” under Windows OS.
Double-click the “Audio Manager” icon on the windows taskbar.
In the popped-out Audio Manager, click the front panel audio output controller
as marked in following image.
The defaulted selection in “Connected device” is “Line Out”, as following
image:
Change the selection to Headphone manually, as shown below.
Click “OK” to confirm and exit the Audio Manager.
When users want to use the audio jack on the back panel instead of the front
panel, just change the option back to “Line Out” in the “Connected device” dialog
box.