Eurocom M3 - Manual (Page 121)

BIOS Utilities
Boot Menu 5 - 15
5
Boot Option Priorities (Boot Menu)
Use the arrow keys to move up and down the menu, and press enter to select a device
from the menu (the selected device will be highlighted in white).
UEFI Boot (Boot Menu > OS Select)
Enable/disable UEFI Boot from this menu. The Unified Extensible Firmware Inter-
face (UEFI) specification provides a clean interface between operating systems and
platform firmware at boot time. In contrast to BIOS, UEFI defines a set of standard
boot and runtime services. The Network Stack item will be enabled as an option un-
der UEFI Boot.