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iMac (27-inch, late 2012) as external display for MacBook Pro (Retina 15-inch mid 2015)

How to use an iMac 27-inch late 2012 as an external display for a MacBook Pro Retina 15-inch mid 2015? The iMac has two Thunderbolt ports and the MacBook Pro has two Thunderbolt 2 ports.

MacBook Pro 15″, macOS 10.15

Posted on Aug 5, 2020 3:24 AM

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BDAqua

Level 10

245,105 points

Posted on Aug 5, 2020 6:21 AM

You can connect any of these older iMac models to another Mac from 2019 or earlier for use as an external display. Learn how to identify your iMac model.

27-inch iMac models introduced in 2009 and 2010: Use a Mini DisplayPort cable to connect your iMac to a Mini DisplayPort or Thunderbolt or Thunderbolt 2 port on the other Mac.
All iMac models introduced in 2011, 2012, 2013, and mid 2014: Use a Thunderbolt cable to connect your iMac to a Thunderbolt or Thunderbolt 2 port on the other Mac. If the other Mac uses Thunderbolt 3, you can use the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter with your cable.

Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later.

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iMac (27-inch, late 2012) as external display for MacBook Pro (Retina 15-inch mid 2015)

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