43 ARK-1123 User Manual
Chapter 3 BIOS Settings
3.2.2.11 USB Configuration
Legacy USB Support
Enables support for legacy USB. Auto option disables legacy support if no USB
devices are connected. DISABLE option will keep USB devices available only
for EFI applications.
XHCI Hand-Off
This is a workaround for OS without XHCI hand-off support. The XHCI owner-
ship change should claim by XHCI driver.
EHCI Hand-Off
This is a workaround for OS without EHCI hand-off support. The EHCI owner-
ship change should claim by EHCI driver.
USB Mass Storage Driver Support
This item allows you to enable or disable the USB mass storage device support.
Device reset time-out
USB mass storage device start unit command time-out.
Device power-up delay
Maximum time the device will take before it properly report itself to the host con-
troller. “Auto” uses default value: for a Root port it is 100 ms, for a Hub port the
delay is taken from Hub descriptor.
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