Asus P5G-MX - Manual (Page 62)

2-18 Chapter 2: BIOS setup
USB Function [Enabled]
Allows you to enable or disable the USB function.
Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable support for USB devices on legacy operating
systems (OS). 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 (480 Mbps) or Full
Speed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed]
BIOS EHCI Hand-Off [Disabled]
Allows you to enable support for operating systems without an EHCI hand-off
feature. Configuration options: [Disabled] [Enabled]