Advantech SOM-5893, Руководство пользователя

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21 SOM-5893 User Manual
Chapter 3
A
MI BIOS
3.2.2.7 USB Configuration
Figure 3.11 USB Configuration

Legacy USB Support
This item allows users to enable or disable Legacy USB Support.
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 item allows users to enable or disable XHCI Hand-off.
The XHCI ownership change should be claimed by XHCI driver.

EHCI Hand-off
This item allows users to enable or disable EHCI Hand-off.
The EHCI ownership change should be claimed by EHCI driver.

USB Mass Storage Driver Support
This item allows users to enable or disable USB Mass Storage Driver Support.

USB transfer time-out
This item allows user to select time-out section.
The time-out value for control, bulk, and interrupt transfers.

Device reset time-out
This item allows user to select device time-out section.
USB mass storage devices start unit command time-out.

Device power-up delay
This item allows user to select device power-up section.
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, for a Hub port
the delay is taken from Hub descriptor.