Get a second-life from an old iMac by turning it into a monitor for a new Apple Mac computer. This feature shows you how to use one Mac's monitor as a display for another Mac.

Many readers want to use an old iMac as an external monitor—it’s one of the most frequent Mac 911 questions! We previously provided an almost-comprehensive answer to the question before Apple ...

You might wonder why this is a feature, since it bypasses a perfectly good iMac computer to use it as an external monitor.