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iMac 2015 as second screen for 2018 MacBook Air

Can I use the iMac 2015 as a second screen for my 2018 MacBook Air?

I have tried using a conversion from mini port to HDMI and from MacBook Air to HDMI and connecting both using an HDMI cable and it does not seem to work.

Please suggest if I can use something else for this to work.

Posted on Feb 18, 2020 3:15 AM

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Question marked as Top-ranking reply

Posted on Feb 18, 2020 3:49 AM

No, you cannot use that 2015 iMac as a display. Target Display mode is not supported on the 2015 iMac.

Only a few Macs could be used like this. The feature is no longer supported.


Use your Mac as a display - Apple Support


From the document linked above:

"Note: Target Display Mode isn’t supported on iMac models with Retina display. Only iMac (27-inch, Late 2009), iMac (27-inch, Mid 2010), and iMac (Mid 2011 to Mid 2014) support Target Display Mode."



1 reply
Question marked as Top-ranking reply

Feb 18, 2020 3:49 AM in response to AnnaG11

No, you cannot use that 2015 iMac as a display. Target Display mode is not supported on the 2015 iMac.

Only a few Macs could be used like this. The feature is no longer supported.


Use your Mac as a display - Apple Support


From the document linked above:

"Note: Target Display Mode isn’t supported on iMac models with Retina display. Only iMac (27-inch, Late 2009), iMac (27-inch, Mid 2010), and iMac (Mid 2011 to Mid 2014) support Target Display Mode."



iMac 2015 as second screen for 2018 MacBook Air

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