User manual

41 ARK-6320 User Manual
Chapter 5 BIOS Operation
5.2.11 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 Mpbs).
 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.
 Hotplug USB FDD Support
A dummy FDD device is created that will be associated with the hotplugged
FDD later. Auto option creates this dummy device only if there is no USB FDD
present.