User Manual

Pro WS W680-ACE Series BIOS Manual
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7.14 USB Configuration
The items in this menu allow you to change the USB-related features.
The Mass Storage Devices item shows the auto-detected values. If no USB device is
detected, the item shows None.
SR-IOV Support
Allows you to enable or disable Single Root IO Virtualization Support if the system has SR-
IOV capable PCIe devices.
Configuration options: [Disabled] [Enabled]
Legacy USB Support
[Enabled] Enabled the Legacy USB support.
[Disabled] USB devices are available only for EFI applications.
[Auto] Automatically disabled the Legacy USB support if no USB devices are
connected.
XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
[Disabled] Support XHCI by XHCI drivers for operating systems with XHCI support.
[Enabled] Support XHCI by BIOS for operating systems without XHCI support.
Mass Storage Devices:
Allows you to select the mass storage device emulation type for devices connected. [Auto]
enumerates devices according to their media format. Optical drives are emulated as [CD-
ROM], drives with no media will be emulated according to a drive type.
Configuration options: [Auto] [Floppy] [Forceg/4vu84d FDD] [Hard Disk] [CD-ROM]
USB Single Port Control
Allows you to enable or disable the individual USB ports.
Refer to section Rear panel features in your motherboard’s user manual for the location
of the USB ports.