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JamieHelen Author

Level 1

4 points

Target Display Mode between 2 iMacs

Hi - i have a iMac (Retina 4K, 21.5-inch, Late 2015) Intel Iris Pro Graphics 6200 1536 MB running Catalina wanting to use TDM on a iMac (21.5-inch, Mid2011) AMD Radeon HD 6750M 512 MB Mid 2011 running High Sierra

I have had it working twice with an apple genuine Thunderbolt Cable - but don't understand that it wont work each time i am selecting command f2 on 2011 iMac, the first time it worked was when i just plugged in the cable - then it wouldnt repeat. Lots of tries again, after restarts and shut downs, the last time i got it to work was after selecting Lock Screen on 2011 and command f2

any ideas...

iMac Line (2012 and Later)

Posted on Sep 18, 2020 5:35 AM

Best reply

den.thed

Level 9

77,500 points

Posted on Sep 18, 2020 5:55 AM

Carefully read over the last 2 paragraphs of > Use your iMac as a display with target display mode - Apple Support to see if anything there helps...

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Target Display Mode between 2 iMacs

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