IEI Integration DM_Series v2.04 - Manual (Page 124)

DM Series Monitor
Page 110
C.4.7 System Page
NOTE:
Some of the functions in the System Page are only available to some of the
IEI LCD series as following:
ƒ Auto Brightness: SRM, MDM and AFOLUX series only
ƒ Main Source Input: MDM and AFOLUX series only
ƒ Volume: AFOLUX series only
ƒ Mute: AFOLUX series only