Configure firmware 
2.7 "Boot" tab 
Firmware/BIOS description SIMATIC IPC BX-39A, IPC PX-39A, IPC PX-39A PRO 
34  Operating Instructions, 01/2023, A5E51110693-AA 
Firmware setting  Value  Setting in deliv-
Meaning 
Newly detected boot media are placed at the top of the 
boot order. 
Newly detected boot media are placed automatically in the 
boot order, e.g. dependent on the device path for UEFI 
Newly detected boot media are placed at the bottom of 
the boot order. 
Booting from USB devices is not permitted. 
Booting from USB devices is permitted. 
Booting from SATA devices is not permitted. 
Booting from SATA devices is permitted. 
• NVMe boot is not permitted.
• External drivers for "NVMe Boot Options" are not load-
ed.
• NVMe boot with integrated NVMe driver is permitted.
• External drivers for "NVMe Boot Options" are not load-
option ROM 
• NVMe boot is not permitted.
• External drivers for "NVMe Boot Options" are loaded.
option ROM 
• NVMe boot is permitted.
• External drivers for "NVMe Boot Options" are loaded.
PXE option ROMs from add-on network cards are not load-
ed. 
PXE option ROMs from add-on network cards are loaded. 
Delay time during booting in seconds, e.g. so that the user 
has time to press the hotkey to get to the firmware selec-