Activating target display mode

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Level 1

8 points

Activating target display mode

Hi, can I activate target display mode via a USB C Hub to HDMI cable and from HDMI cable to a Mini DisplayPort Thunderbolt HDMI adapter?

Description: I've been using a USB C Hub to connect my MacBook Pro 2019 to an external monitor via HDMI - works perfect. I recently got an iMac late 2012 for which I bought a Mini DisplayPort Thunderbolt 2 HDMI adapter to connect the other end of the HDMI cable but this doesn't seem fruitful. Any thoughts on why target display mode is not working? Both devices are running Catalina.

Posted on Jan 2, 2021 5:46 PM

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Answer 1

Top-ranking reply

dialabrain

Level 10

135,527 points

Jan 2, 2021 6:07 PM in response to Tibzo

Target display mode requires macOS High Sierra or earlier on the iMac used as the external display. It does not work with macOS Mojave or later.

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

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Answer 2

Tibzo Author

Level 1

8 points

Jan 2, 2021 6:15 PM in response to dialabrain

Thanks for your quick and helpful response :-) How else can I turn my iMac (without downgrading :-) ) into a secondary display unit. I have used screen share but it does not provide the desired output. Are there options I can explore?

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