We're trying to get a DELL U2515H (2560 x 1440) running on a Mac Mini (late 2011). Currently it's connected with HDMI.

Unfortunately it seems like resolutions only up to 1920 x 1200 are supported using HDMI on the mac mini: HDMI port with support for up to 1920-by-1200 resolution https://support.apple.com/kb/sp632?locale=en_US

However, resolutions up to 2560x1600 are supported using Thunderbolt: Thunderbolt port with support for up to 2560-by-1600 resolution https://support.apple.com/kb/sp632?locale=en_US

So the question is: which cable should we get to get to connect the Display -> Thunderbolt?


Thunderbolt is a "multi-plexing" of multiple signals

  • PCIe
  • USB
  • DisplayPort

If all you are connecting is a monitor, a simple DisplayPort to DisplayPort cable will work fine. Since the Mac mini has mDP and the Dell has both mDP and DP, either a mDP-mDP or mDP-DP will function.

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You should be able to use a Thunderbolt cable to attach the Mac Mini Thunderbolt port to the Dell Mini DisplayPort.

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