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I'm connecting a MacBook Pro (Retina, 15-inch, Mid 2015) to an Epson PowerLite 811p Projector. I need a 30-foot cable between them, and would prefer to use the HDMI cable I already have.

Is it possible to convert the signal twice, first from Mini Displayport to HDMI, then from HDMI to VGA or DVI?

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    How long is 'long'? You'll struggle to push the signal 15m over DVI alone, even without adaptors, unless they are powered converters.
    – Tetsujin
    Jun 28, 2017 at 18:30
  • 30 feet, edited to clarify!
    – rcrogers
    Jun 28, 2017 at 18:39
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    I think your best bet is a single cable; less chance of error/signal loss.
    – Tetsujin
    Jun 29, 2017 at 13:05

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