BIOS
3.2.10 USB Configuration
Legacy USB Support
Enables support for legacy USB. AUTO option disables legacy support if no
USB devices are connected.
USB 2.0 Controller Mode
Configures the USB 2.0 controller in High Speed (480Mbps) or Full Speed
(12MBPS).
BIOS EHCI Hand-Off
This is a work around for OSs without EHCI hand-Off support. The EHCI
ownership change should be claimed by EHCI driver.
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