22 | 2. Advanced Menu
2-9 USB Configuration
USB Configuration Parameters.
2-9-1 Legacy USB Support
The item allows you to enable 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.
2-9-2 Legacy USB3.0 Support
Enable/Disable legacy USB3.0 support.
2-9-3 XHCI Hand-off
This is a workaround for OSes without XHCI hand-off support. The XHCI ownership change should
be claimed by XHCI driver.
2-9-4 USB FLASH DRIVE PMAP
This item 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.
