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Using Old 2008 iMac as External Monitor for New Macbook

Hi, I have a 2008 iMac and a 2022 Macbook. I'd like to use my iMac as an external monitor. Is it possible to do this? Would I need to get a mini DVI to Thunderbolt 3 adapter? Does such a thing exist? Thank you!

MacBook Air, macOS 12.4

Posted on Aug 7, 2022 7:39 AM

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Question marked as Top-ranking reply

Posted on Aug 7, 2022 7:41 AM

The 2008 iMac does not support target display mode, so you cannot use it as external display.

You can try to use an external solution like Luna Display.


See this link for reference

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


2 replies

Aug 7, 2022 7:50 AM in response to Shoptimist

Sorry but the 2008 is way too old to support Target Display Mode and the new iMac is too new to support it. Please read the information in Target Display Mode (Target Display Mode) which supports what I am stating.


My suggestion is to simply buy an external display for the new Mac. This is much more simple, less expensive (does not require expensive cables) and is much much more reliable than Target Display Mode ever was.


Best of luck.

Using Old 2008 iMac as External Monitor for New Macbook

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