iMac as a second screen

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GinnieGov Author

Level 1

4 points

iMac as a second screen

I want to use my iMac as a second screen with my MacBook Pro.

iMac is running High Sierra, MacBook Pro Monterey

hHave connected the 2 using Thunderbolt/HMDI to an HDMI/USBC.

iMac does not see MacBook.

Help?

Posted on Jan 28, 2023 02:24 PM

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Answer 1

Top-ranking reply

MrHoffman

Community+ 2025

Level 10

140,831 points

Jan 28, 2023 02:27 PM in response to GinnieGov

Both your iMac and your MacBook must be old enough for this to work.

Here is how, and how old each must be:

… Use your iMac as a display with target display mode - Apple Support

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Answer 2

GinnieGov Author

Level 1

4 points

Jan 28, 2023 02:34 PM in response to MrHoffman

thank you! Computer are 2011 and 2019 - so should be good.

second question. Articles says use thunderbolt to connect the MacBook only has USBC - can I use HMDI to USBC?

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Answer 3

Jan 28, 2023 02:43 PM in response to GinnieGov

Carefully read the link provided by MrHoffman.

The controlling Mac must be running macOS Catalina or earlier. Monterey is a disqualifier.

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Answer 4

GinnieGov Author

Level 1

4 points

Jan 28, 2023 02:52 PM in response to D.I. Johnson

thank you

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Answer 5

GinnieGov Author

Level 1

4 points

Jan 28, 2023 03:00 PM in response to D.I. Johnson

So not an option at all?

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Answer 6

Jan 28, 2023 03:05 PM in response to GinnieGov

No official support from Apple.

However: Luna Display maybe.

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Answer 7

GinnieGov Author

Level 1

4 points

Jan 28, 2023 03:24 PM in response to D.I. Johnson

thanks for the tip!

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Answer 8

Jan 28, 2023 03:28 PM in response to GinnieGov

You're welcome. 🙂

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iMac as a second screen

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