Convert a 5K iMac into an External Display | Michael Schmitt | Mobile & Web Developer
Refurbished 27" iMac mit Retina 5K Display und 3,8 GHz 8‑Core Intel Core i7 - Apple (DE)
How To: Use a 4k Display as an External Monitor for 5k iMac - 4k @ 60hz - YouTube
Incase anyone ever needs the answer…I have a 27” 2010 iMac working in Target Display Mode with a M1 MacBook Pro using a miniDP to USB C adaptor that's capable of 4k60Hz.
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How To Use an iMac as a Monitor for a PC
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