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USB Confi guration
This feature allows the user to confi gure USB settings for the motherboard.
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.
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.
Legacy USB1.1 HC Support
Select Enabled to enable Legacy USB 1.1 HC support. The settings are Disabled
and Enabled.
Hot-Plug USB FDD Support
When this item is set to Enabled, a dummy Floppy Device Drive will be created as
a Hot-Plug Floppy device in the system. When this item is set to Auto, a dummy
fl oppy device will be created if no USB FDD device is detected in the system. The
options are Disabled, Enabled and Auto.
ACPI Confi guration
Use this feature to confi gure Advanced Confi guration and Power Interface (ACPI)
power management settings for your system.
ACPI Version Features
The options are ACPI v1.0, ACPI v2.0 and ACPI v3.0. Please refer to ACPI's website
for further explanation: http://www.acpi.info/
ACPI APIC Support
Select Enabled to include the ACPI APIC Table Pointer in the RSDT (Root System
Description Table) pointer list. The options are Enabled and Disabled.
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Chapter 5: AMI BIOS
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