Acer GM712/D4K2107 - System Management and Audio; System Settings and Information

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Setting
Note: Functions vary depending on model definition.
Source Selection Manual by source menu, Auto by Smart Detection.
HDMI CEC Default is "Off". Choose "On" to enable HDMI CEC function.
Information Display the projector information for Model Name, Input Source,
Signal Type, Display Mode, Serial No., Software Version and QR
code on the screen.
Scan QR code linking to Acer projector portal via mobile.
Reset Press the "ENTER" button and choose "Yes" to return the
parameters on all menus to the factory default settings.