InFocus BIG TOUCH INF8511, Hardware Manual

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Audio
Sel Adjust Enter Back Quit
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AUDIO
SPEAKER
AUDIO SOURCE
AUDIO RESET
INTERNAL
HDMI 1
NO
Speaker: controls whether both the internal and external speakers (sound bar, etc.) or just external speakers are used.
Options include: Internal (both internal and external speakers operate) and External (only external speakers operate).
Default Internal.
Audio Source:
selects the audio input source. Options include: HDMI 1, HDMI 2, HDMI 3, DisplayPort (DP), PCSpeaker,
Mondopad, Audio 1, and Audio 2.
Audio Reset: resets all Audio menu items to factory default settings. Options: Yes and No.