SUPER MICRO Computer 1.2b user manual South Bridge Configuration

Chapter 4: AMI BIOS

South Bridge Configuration

USB Functions

Select Enabled to use onboard USB connections. The Options are: Disabled and

Enabled.

Legacy USB Support

Select Enabled to use Legacy USB devices. If this item is set to Auto, Legacy USB support will be automatically enabled if a legacy USB device is installed on the motherboard, and vise versa. The settings are Disabled, Enabled and Auto.

Port 64h/60h Emulation

Select Enabled to enable Port 64h/60h emulation for complete USB keyboard sup- port for operating systems that are not compatible with USB devices. The options are Enabled and Disabled.

USB 2.0 Controller (Available when the item: USB Functions is disabled)

This feature displays the current USB controller used in the motherboard.

USB 2.0 Controller Mode

This setting allows you to select the USB 2.0 Controller mode. The options are Hi-Speed (480 Mbps) and Full Speed (12 Mbps).

BIOS EHCI Hand-Off

Select Enabled to enable BIOS Enhanced Host Controller Interface support to provide a workaround solution for an operating system that does not have EHCI Hand-Off support. When enabled, the EHCI Interface will be changed from the BIOS- controlled to the OS-controlled. The options are Disabled and Enabled.

HDA Controller

Select Enabled to activate the onboard High-Definition Audio controller. The options are Enabled and Disabled.

Frontside Audio Mode

Select HD Audio to enable high-definition audio support for the front side audio connection. Select AC'97 to use AC'97 for the front side audio connection. The options are HD Audio and AC'97.

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