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 With Target Display Mode
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M1 iMacs don't offer Target Display Mode for use as an external monitor, but here's a workaround - 9to5Mac
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Using an iMac as a Monitor in Target Display Mode
Would this work? Using an iMac in target display mode as a monitor for an eGPU setup + Macbook Pro? : r/eGPU
