Setting | Audio Settings - ViewSonic Pro10100 User Manual

SETTING | Audio Settings

Internal Speaker
Choose the "On" or "Off" to turn on or off the internal speaker.
Mute
Choose the "On" to turn mute on.
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Choose the "Off" to turn mute off.
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Volume
Press the ◄ to decrease the volume.
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Press the ► to increase the volume.
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