User manual

BIOS Setup
- 20 - EC3-1816CLD2NA(B)
3. BIOS Setup
3.1 UEFI Overview
UEFI (Unified Extensible Firmware Interface) is the latest computer firmware to
replace traditional BIOS. UEFI is solidified in the flash memory on the CPU board. Its
main functions include: initialize system hardware, set the operating status of the
system components, adjust the operating parameters of the system components,
diagnose the functions of the system components and report failures, provide hardware
operating and control interface for the upper level software system, guide operating
system and so on. UEFI provides users with a human-computer interface in menu style
to facilitate the configuration of system parameters for users, control power
management mode and adjust the resource distribution of system device, etc.
Setting the parameters of the UEFI correctly can enable the system to operate stably
and reliably; meanwhile it can also improve the overall performance of the system.
Improper even incorrect UEFI parameter setting will decrease the system operating
capability and make the system unstable even unable to operate normally.
3.2 UEFI Parameter Setup
Prompt message for BIOS setting may appear once powering on the system. At that
time (invalid at other time), press the key specified in the prompt message (usually
<Del> or <F2>) to enter UEFI setting.
All the setup values modified by UEFI (excluding date and time) are saved in the flash
storage in system; the contents will not be lost even if power is disconnected or the
battery of the board is removed. The date and time are saved in CMOS storage, which
is powered by battery; unless clearing CMOS is executed, its content would not be lost
even if external power is cut off.
Note: UEFI setting will influence the computer performance directly. Setting
parameter improperly will cause damage to the computer; it may even be unable to
power on. Please use the internal default value of UEFI to restore the system.
Our company is constantly researching and updating UEFI, its setup interface
may be a bit different. The figure below is for reference only; it may be different
from your UEFI setting in use.