Jetway Computer NC9S - Manual (Page 45)

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Boot option filter
This option controls what device system can boot to.
The optional settings are: [UEFI and Legacy]; [Legacy only]; [UEFI only].
Launch PXE OpROM policy
This option controls the execution of UEFI and Legacy PXE OpROM.
The optional settings are: [Do not launch]; [UEFI only]; [Legacy only].
Launch Storage OpROM policy
This option controls the execution of UEFI and Legacy Storage OpROM.
The optional settings are: [Do not launch]; [UEFI only]; [Legacy only].
Launch Video OpROM policy
This option controls the execution of UEFI and Legacy Video OpROM.
The optional settings are: [Do not launch]; [UEFI only]; [Legacy only].
Other PCI device ROM priority
This item is for PCI devices other than Network, Mass storage or video defines
which OpROM to launch.
The optional settings are: [UEFI OpROM]; [Legacy OpROM].