Level 1

8 points

Dual screen from 2019 Macbook Pro to 2010 iMac not working

Hello.

I have purchased the USB-C to Thunderbolt adapter (plus 50cm thunderbolt cable) to connect my Macbook Pro to my iMac, to use the iMac as an extra/additional monitor. I've connected the devices but he COMMAND F2 function doesn't do anything. The iMac just remains showing its own screen.

Am I missing something? Any assistance would be greatly appreciated.

Posted on May 10, 2021 3:49 PM

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481 1

7 replies

May 10, 2021 5:49 PM in response to Strugar

That article suggest that the correct cable for the 2010 27-in iMac is a Mini DisplayPort cable.

The ThunderBolt-3 <-> ThunderBolt-2 adapter supports ONLY genuine ThunderBolt displays, and no other display protocols under any circumstances.

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May 10, 2021 5:35 PM in response to Strugar

Yes, you are:

candidates include:

MacBook Pro 2020 models no longer support the feature.

iMacs running Mojave or later do not support the feature.

You may not have the correct cabling.

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

.

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Level 1

8 points

May 10, 2021 5:40 PM in response to Grant Bennet-Alder

Thanks for the reply, Grant.

My Macbook Pro is 2019 and the iMac is 2010 running El Capitan.

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May 10, 2021 5:43 PM in response to Strugar

Get an external monitor. Use the correct tool for the job. Using another computer's display is not the correct tool.

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Level 1

8 points

May 10, 2021 5:48 PM in response to BobTheFisherman

Thanks Bob. I already had the iMac, so thought I'd use what I have for now.

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Level 1

8 points

May 10, 2021 5:50 PM in response to Grant Bennet-Alder

Thanks Grant. I did see that when looking at the article. I appreciate your help with this. Cheers.

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May 10, 2021 5:54 PM in response to Strugar

BobTheFisherman makes a good point as well...

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Dual screen from 2019 Macbook Pro to 2010 iMac not working

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