Usb Configuration - Asus Crossblade Ranger User Manual

3.6.3

USB Configuration

The items in this menu allow you to change the USB-related features.
The USB Devices item shows the auto-detected values. If no USB device is detected, the
item shows None.
USB Device Enable [Enabled]
Allows you to enable or disable all USB ports. Configuration options: [Disabled] [Enabled]
Legacy USB Support [Enabled]
[Disabled]
[Enabled]
[Auto]
EHCI Hand-off [Disabled]
This item is set to [Disabled] by default for the EHCI (enhanced host controller interface)
support by EHCI drivers in operating systems.
[Disabled]
[Enabled]
USB Single Port Control
Allows you to enable or disable the individual USB ports.
Refer to the Motherboard layout section for the location of the USB ports.
3-22
The USB devices can be used only for the BIOS setup program. It cannot
be recognized in boot devices list.
Enables the support for USB devices on legacy operating systems (OS).
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.
Support EHCI by EHCI drivers for operating systems with EHCI support.
Support EHCI by BIOS for operating systems without EHCI support.
Chapter 3: BIOS setup