Acer M511 User Manual page 20

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Note 1: To ensure the projector works well with your computer,
please make sure the timing of the display mode is compatible with
the projector.
Note 2: Functions vary depending on model definition
Note 3: USB cable needs powered extender if the length is over 5 m.
Note 4: USB DC 5V out connector support 5V power output for
power bank charging.