Chapter 3 – AMI BIOS Setup 47Pico-ITX Board PICO-BSW13.4.6 Advanced: CSM ConfigurationOptions summary: (default setting)CSM SupportEnabledDisableEnable/Disable CSM Support.Boot option filterUEFI and LegacyLegacy onlyUEFI onlyThis option controls Legacy/UEFI ROMs priorityLaunch PXE ROMDIsabledEnabledControls the execution of UEF and Legacy PXE OpROM