Advantech AIMB-786, Руководство пользователя

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53 AIMB-786 User Manual
Chapter 3
B
IOS Operation
3.2.2.15 USB Configuration
Figure 3.33 USB Configuration

Legacy USB Support
This is for supporting USB device under legacy OS such as DOS. When choos-
ing "AUTO", the system will automatically detect if any USB device is plugged
into the computer and enable USB legacy mode when a USB device is plugged
and disable USB legacy mode when no USB device is plugged.

XHCI Hand-off
This is a workaround for OS without XHCI hand-off support. The XHCI owner-
ship change should be claimed by XHCI driver.

USB Mass Storage Driver Support
“Enable or Disable” USB Mass Storage driver support.

USB transfer time-out
Allows you to select the USB transfer time-out value. [1,5,10,20sec]

Device reset time-out
Allows you to select the USB device reset time-out value. [10,20,30,40sec]

Device power-up delay
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 100 ms, for a Hub port
the delay is take from Hub descriptor.

Mass Storage Devices
Mass storage device emulation type. "Auto" enumerates device according to
their media format. Optical drives are emulated as "CD-ROM"', drives with no
media will be emulated according to a drive type.