User manual

47 AIMB-203 User Manual
Chapter 3 BIOS Operation
3.2.2.10 USB configuration
 Legacy USB support
Enables support for legacy USB. Auto option disables legacy support if no USB
devices are connected.
 USB3.0 support
This item allows users to enable or disable USB3.0 function.
 XHCI Hand-off
This is a workaround for OS without XHCI hand-off support. The XHCI owner-
ship change should claim by XHCI driver.
 EHCI Hand-off
This is a workaround for OS without EHCI hand-off support. The EHCI owner-
ship change should claim by EHCI driver.
 USB Mass Storage Driver Support
This item allows users to enable or disable USB Mass Storage Driver.
 USB transfer time-out
Time-out value for control, bulk, and interrupt transfers.
 Device reset time-out
USB mass storage device starts unit command time-out.
 Device power-up delay
Maximum time the device will take before it properly reports itself to the host
controller.
 Mass storage device
Mass storage device emulation type. 'AUTO' enumerates devices according to
their media format. Optical drives are emulated as 'CDROM'.