IBASE Technology MI997AF, Руководство пользователя

Страница: 77 / 98

BIOS Setup
MI997AF User’s Manual
67
4
4.4.11 USB Configuration
BIOS Setting Description
Legacy USB Support

Enabled enables Legacy USB support.

Auto disables legacy support if there is no
USB device connected.

Disabled keeps USB devices available
only for EFI applications.
XHCI Hand-off
This is a workaround for OSes without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
USB Mass Storage
Driver Support Enables / Disables the support for USB mass
storage driver.
USB Transfer time-
out The time-out value (1 / 5 10 / 20 secs) for
Control, Bulk, and Interrupt transfers.
Device reset time-out
Gives seconds (10 / 20 / 30 / 40 secs) to delay
execution of Start Unit command to USB mass
storage device.
Device power-up
delay
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.