Asus T3-P5945GC - Manual (Page 65)

5-18 Chapter 5: BIOS setup
The Module Version and USB Devices Enabled items show the
auto-detected values. If no USB device is detected, the item shows
None.
5.4.1 USB Configuration
The items in this menu allow you to change the USB-related features.
Select an item then press <Enter> to display the configuration options.
USB Configuration
Module Version - 2.24.0-10.4
USB Devices Enabled:
None
USB Function [Enabled]
Legacy USB Support [Auto]
USB 2.0 Controller [Hispeed]
BIOS EHCI Hand-off [Enabled]
USB Function [Enabled]
Allows you to enable or disable the USB host controllers.
Configuration options: [Enabled] [Disabled]
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 Mode [HiSpeed]
Allows you to set the USB 2.0 controller mode to HiSpeed (480 Mbps) or
FullSpeed (12 Mbps). Configuration options: [FullSpeed ] [HiSpeed ]
BIOS EHCI Hand-off [Enabled]
Allows you to enable or disable the enhanced host controller interface
(EHCI) hand-off support. This is a workaround for operating systems
without EHCI hand-off support. The ECHI ownership change should be
claimed by the EHCI driver. Configuration options: [Disabled] [Enabled]