Chapter: BIOS Settings Boot
page 108 Beckhoff New Automation Technology CB3064-xxxx
StartUpDelay for UEFI shell
Options: 0..255
Boot mode select
Options: Legacy / UEFI / DUAL
Fixed Boot Order Priorities
Options: Review or change the sequence of available boot devices
Advanced Fixed Boot Order Parameters
Sub menu: see "Fixed Boot Order Priority" (page 109)