Guest frilli Posted November 29, 2021 Posted November 29, 2021 Hello to all, I have a problem connecting the Mac Pro with a 27 "Thunderbolt Display, model A1407. I saw around the internet that in order to use this monitor with the Mac Pro, you had to use a DisplayPort to Mini Displayport adapter, and for convenience a Displayport extension cable (I put myself in the picture), however nothing, no signal... if instead I attack the Macbook Pro directly to the monitor cable all OK !!! Question, but the Displayport port of the Shaphire RX 580 video card... Read more Source: MacRumors
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