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When only one HDMI cable is connected, the projector can automatically switch to the HDMI signal, or you can manually select the HDMI signal. When the projector detects the signal, it will display the content projected over HDMI. If the HDMI cable is unplugged, the behavior of the projector will vary depending on how the signal was initially selected. If the signal was connected via automatic switching, it will automatically return to the initiator. If the signal was connected via manual switching of the HDMI signal, it will stay at the No Signal screen.
 
If you need additional assistance, please contact our customer support team.

How does the HDMI function work and what are dual HDMI input / output scenarios?

Nebula

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