M1 Imac -target display
How can you use your M1 iMac as a target display for a Mackbook
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The M1 iMac does not support being used as a display in Target Display Mode.
see > Use your iMac as a display with target display mode - Apple Support
If you need a larger display for your MacBook, then you need an external display.
see > Use an external display with your MacBook Pro - Apple Support
or > Use an external display with your MacBook Air - Apple Support
