Axiomtek MANO861 - Manual (Page 57)

MANO861 Mini ITX Board
AMI BIOS Setup Utility 49
 Option Rom Policy
Boot Option Filter
This option controls what devices system can boot to.
Launch PXE OpROM policy
Enable or disable boot options for legacy network devices.
Launch Storage OpROM policy
Control the execution of UEFI and legacy storage OpROM.