User manual

39 AIMB-213 User Manual
Chapter 3 BIOS Operation
3.2.2.7 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
This item allows you to select HiSpeed (480 Mbps) or FullSpeed (12 Mbps).
 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.