Dell UZ2215H Monitor - Manual (Page 40)

40 | Operating the Monitor
2. Mute
To mute the audio, press the Mute button. The mute-button light turns on when
audio is muted.
3. Volume Down/Volume Up
To adjust the volume, press the Volume Down or Volume Up buttons.
The activated OSD shows the numeric values of the volume level.
4. Microphone Mute
To mute the microphone, press the Microphone Mute button. The microphone-
mute-button light turns on when the microphone is muted.