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mpro mid 2014

  1. gio1234

    MBpro and Sierra incorrect external monitor resolution 4k

    Hello everyone. (Sorry for my English) I have a problem I can not solve. I have a Macbook pro mid 2014 retina with s.o Sierra which I connected an external 4K 27 inch monitor with hdmi-hdmi cable. The problem is that on the 4k monitor I can not set the 4k result but only 1080p. I've already read...
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