Asus Maximus III Gene - Manual (Page 100)

3-30 Chapter 3: BIOS setup
The USB Devices Enabled item shows the auto-detected values. If no USB
device is detected, the item shows None.
USB Functions [Enabled]
[Enabled] Enables the USB Host Controllers.
[Disabled] Disables the controllers.
The following items appear only when you set USB Functions to [Enabled].
Legacy USB Support [Auto]
[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.
[Enabled] Enables the support for USB devices on legacy operating systems
(OS).
[Disabled] Disables the function.
BIOS EHCI Hand-off [Enabled]
[Enabled] Enables the support for operating systems without an EHCI
hand-off feature.
[Disabled] Disables the function.
3.5.4 USB Configuration
The items in this menu allows you to change the USB-related features. Select an
item then press <Enter> to display the configuration options.
BIOS SETUP UTILITY
Advanced
USB Configuration
Module Version - 2.24.5-13.4
USB Devices Enabled:
2 Hubs
USB Functions [Enabled]
Legacy USB Support [Auto]
BIOS EHCI Hand-off [Enabled]
Options
Disabled
Enabled