How do I turn on the display. I can't find a switch and screen doesn't com on when plugged in!,

Lg customer support not familiar with product. Can't answer question.

LG UltraFine 4K Display

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    It turns on with your MacBook Pro. There are no controls on the display itself.

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  • It took several rounds of plugging in the supplied cable before the monitor finally turned on. But it eventually did.

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  • I also could not find an on/off switch but my macbook screen was immediately transferred to the LG when the USB cable was attached. It would be nice if there was an on/off switch, unless the power draw is so minimal? Great monitor otherwise!

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