Asrock A75 Pro4 用户手册

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3.4.3  South Bridge Configuration

Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature. If 
you select [Auto], the onboard HD Audio will be disabled when PCI Sound 
Card is plugged.
Front Panel 

Select [Auto] or [Disabled] for the onboard HD Audio Front Panel.

 

  On/Off Play

Use this item to enable or disable On/Off Play Technology. The defaultval-
ue is [Enabled]. When On/Off Play is enabled, Deep Sx will be disabled. If 
you want to enable Deep Sx, please disable On/Off Play   rst. 

This allows you to enable or disable the onboard LAN feature.

This allows you to enable or disable the onboard IEEE 1394 feature.

  Enable this option to turn off Power LED and Port80 LED when the system 

is power on. The keyboard LED will also be turned off in S1, S3 and S4 
state. The default value is [Auto].

  Use this to enable or disable onboard debug port LED. The default value 

is [Auto].