Avalue EMS-BYT - Manual (Page 66)

EMS-BYT Series
66 EMS-BYT Series Quick Reference Guide
Boot option filter
UEFI and Legacy
Legacy only[Default]
UEFI only
This option controls Legacy/UEFI ROMs
priority.
Network
Do not launch[Default]
UEFI only
Legacy only
Controls the execution of UEFI and Legacy
PXE OpROM.
Storage
Do not launch
UEFI only
Legacy only[Default]
Controls the execution of UEFI and Legacy
Storage OpROM.
Video
Do not launch
UEFI only
Legacy only[Default]
Controls the execution of UEFI and Legacy
Video OpROM.
Other PCI devices
UEFI only
Legacy only[Default],
Determines OpROM execution policy for
devices other than Network, Storage, or
Video.
3.6.2.11 USB Configuration
The USB Configuration menu helps read USB information and configures USB settings.
Item Options Description
Legacy USB Support
Enabled[Default]
Disabled
Auto
Enables 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.
XHCI Hand-off
Enabled[Default]
Disabled
This is a workaround for OSew without XHCI
hand-off support. The XHCI ownership change
should be claimed by XHCI driver.
EHCI Hand-off
Enabled
Disabled[Default]
This is a workaround for OSes without EHCI
hand-off support. The EHCI ownership change
should be claimed by EHCI driver.
USB Mass Storage Driver Support
Enabled[Default]
Disabled
Enable/Disable USB Mass Storage Driver
Support.