ViewSonic VA2456-MIKU User Manual page 22

Volume
Adjust the level, or mute the volume.
Viewmode
NOTE: Press the 3 key to mute the volume.
Contrast/Brightness
Input Select
Main Menu
Exit
Contrast/Brightness
Adjust the contrast or brightness level.
Input Select
Select the input source.
Exit
Exit the Quick Menu.
NOTE: Press the 5 key to exit the Quick Menu.
Volume
99
Contrast
60
Brightness
85
Input Select
D-sub
HDMI
DISPLAYPORT
22