IBASE Technology ASB200-918 Series User Manual page 54

4.4.9 USB Configuration
BIOS Setting
Legacy USB
Support
XHCI Hand-off
USB Mass
Storage Driver
Support
USB transfer
time-out
Device reset
time-out
Device power-
up delay
46
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.
This is a workaround for OSes without XHCI hand-off
support. The XHCI ownership change should be claimed
by XHCI driver.
Enables / Disables the support for USB mass storage
driver.
The time-out value for control, bulk, and Interrupt
transfers.
Options: 1 sec / 5 sec / 10 sec / 20 sec
Seconds of delaying execution of start unit command to
USB mass storage device.
Options: 10 sec / 20 sec / 30 sec / 40 sec
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.
Options: Auto / Manual
ASB200-918 User Manual