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The following items appear only when you set USB Functions to [Enabled].
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 set the USB 2.0 controller mode to HiSpeed (480 Mbps) or
FullSpeed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed]
The USB 2.0 Controller Mode item appears only when you enable the USB
2.0 Controller.
BIOS EHCI Hand-off [Enabled]
Allows you to enable the support for operating systems without an EHCI hand-off
feature. Configuration options: [Disabled] [Enabled]
Port 64/60 Emulation [Disabled]
Allows you to enable or disable the I/O port 60h/64h emulation support. This item
should be enabled for the complete USB keyboard legacy support for non-USB
aware OSes. Configuration options: [Disabled] [Enabled]
Legacy USB Support [Auto]
Allows you to enable or disable the support for legacy USB devices. 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]
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Chapter 4: BIOS setup
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