LDLC M27 Manual Del Usuario página 50

MUTE
DDC/CI
FACTORY RESET
INFORMATION
Select the「MUTE」option to switch the function On or Off.
Select the 「DDC/CI」option to switch the function On or Off.
Select the 「FACTORY RESET」option to reset to the monitor's
default setting. This will erase the current settings. Enter the option and
select On or Off.
Display Horizontal frequency/Vertical frequency/Resolution information.