Advantech AIMB-216, User Manual

Page: 71 / 128

59 AIMB-216 User Manual
Chapter 3
B
IOS Operation
 Legacy USB support
This item allows users to enable or disable support for legacy USB. The “Auto”
option disables legacy support if no USB devices are connected.

XHCI Hands Off
This is a workaround for OS without XHCI hands-off support. The change in
XHCI ownership should be claimed by the XHCI driver.
 EHCI Hands Off
This is a workaround for OS without EHCI hands-off support. The change in
EHCI ownership should be claimed by the EHCI driver.
 USB Mass Storage Driver Support
This item allows users to enable or disable the USB mass storage driver.

USB Transfer Timeouts
Time-out value for control, bulk, and interrupt transfers.
 Device Reset Timeout
USB mass storage device starts unit command time-out.
 Device Power-up Delay
Maximum time the device will take before it properly report itself to the host con-
troller.
 Mass Storage Device
Mass storage device emulation type. 'AUTO' enumerates devices according to
their media format. Optical drives are emulated as 'CDROM', drives with no
media will be emulated according to a drive type.