Macworld - USA (2022-01)

JANUARY 2022 MACWORLD 107

Mac 911

Solutions to your most vexing Mac problems.

BY GLENN FLEISHMAN

HELPDESK

Answering Your Questions and Sharing Your

Tips About Getting the Most From Your Mac

IMAGE: APPLE

WANT TO USE AN iMAC AS

AN EXTERNAL MONITOR?

YOU NEED AN OLD VERSION

OF MACOS

One of the most common reader

questions we get is, “Can I use my iMac as

an external monitor?” We previously

provided an almost-comprehensive

answer (fave.co/3a4jmi8) to the question

before Apple restored a page on its site

that offered technical details. The general

answer is that only iMacs models shipped

from 2009 to mid-2014 (the seventh- and

eighth-generation models) had the right

graphics circuitry for this Target Display

Mode feature.