Peripherals
Thinking inside the box to refresh the parts other tips can’t reach
by CRAIG MARSTON
Quick-fire questions
How to use my iMac 5K 2017 as an external display?
> Your iMac is too recent to be run as a target display (see bit.ly/ mac390imactarget). The only way to use it as a display is through AirPlay Display in Monterey and later, which probably isn’t what you had in mind.