Asus P5LD2-X/GBL - Manual (Page 78)

4-20 Chapter 4: BIOS setup
USB Function [Enabled]
Allows the BIOS to auto-detect the number of USB ports in your system. Setting
this item to [Disable] disables the USB device detection function.
Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for legacy USB devices. Setting to [Auto]
allows the system to detect the presence of USB devices at startup. If detected,
the USB controller legacy mode is enabled. If no USB device is detected, the
legacy USB support is disabled.
Configuration options: [Disabled] [Enabled] [Auto]
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 controller.
Configuration options: [Enabled] [Disabled]
USB 2.0 Controller Mode [HiSpeed]
Allows you to configure the USB 2.0 controller in HiSpeed or Full Speed
Configuration options: [FullSpeed] [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
Allows you to enable support for operating systems without an EHCI hand-off
feature.
Configuration options: [Enabled] [Disabled]