TYAN S8225 User Manual page 56

3.7.8 - USB Configuration Sub- Menu
Legacy USB Support
Enables support for legacy USB. AUTO option disables legacy support if no USB
devices are connected.
[Enabled] / [Disabled] / [Auto]
USB 2.0 Controller Mode
Configure the USB 2.0 controller in Hi Speed (480 Mbps) or Full Speed (12Mbps).
[Hi Speed] / [Full Speed]
BIOS EHCI Hand-OFF
This is a work around for OSes without EHCI hand-off support. The EHCI
ownership change should claim by EHCI driver.
[Enabled] / [Disabled]
Legacy USB1.1 HC Support
Enables support for legacy USB. Auto option disables legacy support if no USB
devices are connected.
[Enabled] / [Disabled]
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