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3.9USB Configuration
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Legacy USB Support
Enables support for legacy USB. Auto option disables legacy support If no USB
Devices are connected.
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USB2.0 Controller Mode
This item allows you to select Hi-Speed (48OMbps) or Full Speed(l2Mpbs).
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BIOS EHCI Hand-Off
This is a workaround for Oss without EHCI hand-off support.
The EHCI owner-ship change should be claimed by EHCI driver.