Usb Configuration - Asus Gryphon Z97 Manual

3.6.5

USB Configuration

The items in this menu allow you to change the USB-related features.
The Mass Storage Devices item shows the auto-detected values. If no USB device is
detected, the item shows None.
Legacy USB Support [Enabled]
[Enabled]
[Disabled]
[Auto]
Intel xHCI Mode [Smart Auto]
[Auto]
[Smart Auto]
[Enabled]
[Disabled]
EHCI Hand-off [Disabled]
[Enabled]
[Disabled]
3-36
Your system supports the USB devices in legacy operating systems.
Your USB devices can be used for BIOS setup only and cannot be
recognized in the boot devices list.
Your system automatically detects the presence of USB devices at startup.
If any USB devices are detected, the legacy USB support is enabled.
The xHCI is automatically enabled and runs at USB 3.0 mode when the
xHCI driver is installed in the operating system.
Upon detection, the xHCI driver supports the USB 3.0 mode during both
POST and operating system.
Enables the xHCI controller.
Disables the xHCI controller.
Enables the support for operating systems without an EHCI hand-off
feature.
Disables the EHCI Hand-off support.
Chapter 3: BIOS setup