iMac screen sharing or using as a monitor
I have Imac 27in, 2019. And is it possible to use it as a monitor? or somehow make screen sharing from Mac MacBook?!
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Some iMacs support Target Display Mode. Target Display Mode lets you use the built-in display on a supported iMac as an external display for another Mac.
Apple has published a support article on how to do to this.
https://support.apple.com/en-us/HT204592
You'll see a chart with the supported devices, like this.
The caveat is that iMac (Retina 5K, 27-inch, Late 2014) and later iMac models can't be used as Target Display Mode displays. So it looks like your 2019 will require you to use Screen Sharing to accomplish this.
