Usb Configuration - IBASE Technology BISD3-QM77 User Manual

4.4.6

USB Configuration

BIOS Setting
Legacy USB Support
USB 3.0 Support
XHCI Hand-off
EHCI Hand-off
USB Transfer
time-out
Device reset time-out
Device power-up
delay
BISD3-QM77 User's Manual
Description
Enables Legacy USB support.
"Auto" disables legacy support if there is no USB
device connected.
"Disable" keeps USB devices available only for
EFI applications.
Enables / Disables the support for USB 3.0.
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
The time-out value for Control, Bulk, and Interrupt
transfers.
Seconds of delaying execution of start unit
command to USB mass storage device.
The maximum time the device will take before it
properly reports itself to the Host Controller.
"Auto" uses default value for a Root port it is
100ms. But for a Hub port, the delay is taken from
Hub descriptor.
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BIOS Setup
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