Dual screen

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Level 1

4 points

Dual screen

I have a late 2015 I mac desktop 21.5 Inch with Monetary and want to create a dual screen and I am wondering which model could I use to achieve this? Has anybody any idea? I just want to get it right?And what for cables would I need?

iMac 21.5″, macOS 12.5

Posted on Apr 7, 2023 5:07 PM

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Answer 1

BDAqua

Level 10

250,247 points

Apr 7, 2023 7:34 PM in response to s00ter

What is the other Mac?

But using a 2015 iMac for hat it sounds like will not work...

The following older iMac models can be used as an external display when plugged into another older Mac model.

iMac models introduced in 2011, 2012, 2013, and mid 2014

To use any of these iMac models as an external display:

The iMac used as a display must have macOS High Sierra or earlier installed.
The other Mac that you're connecting it to must have been introduced in 2019 or earlier and have macOS Catalina or earlier installed.
The cable connecting the two Mac computers must be a Thunderbolt or Thunderbolt 2 cable.

24-inch and 27-inch iMac models introduced in 2009 and 2010

To use any of these iMac models as an external display:

The iMac used as a display must have macOS High Sierra or earlier installed.
The other Mac that you're connecting it to must have been introduced in 2019 or earlier and have macOS Catalina or earlier installed.
The cable connecting the two Mac computers must be a Mini DisplayPort cable.

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