Apple then begun deprecating the functionality with macOS Mojave. If you had a 2014 iMac or prior, it couldn’t run Mojave and serve as an external display. It then fully killed the feature with macOS ...

Then press Command+F2 on your iMac to display the other Mac's desktop. To exit target display mode, disconnect the Macs or press the Command+F2 keyboard combination again. How do I speed up an old ...

Apple offers two first-party software solutions for using an iMac as an external monitor: Target Display Mode and AirPlay to Mac. However, these features only work with specific models and OS ...

I've done this before with other machines, but for some reason this isn't working with a newly set up 10.8.1 iMac 27in. Using a TB cable (not mDP). CMD-F2 doesn't do anything in the Finder (set ...

And in the context of an iMac that is effectively obsolete, target display mode is what you want, rather than running an outdated version of macOS that no longer receives security patches (and ...

Apple is still working on a larger iMac with over a 30-inch display, but the development stage and potential release schedule for the all-in-one ...

Update: Hours after this story was published, Apple updated the tech specs for the new iMac to indicate that configurations with the 10-core M4 chip support one external display with up to 8K ...