The Apple iMac is an all-in-one system whose display mounts on a pedestal. Out of the box, Apple’s iMac systems offer little latitude for adjusting the height of the display. If you must lower the screen height of an iMac, it may be easier to adjust other aspects of the workspace instead. Apple also sells a mounting kit that can be deployed to connect an iMac to a third-party monitor stand. Writer Bio

How to Lower the Screen Height on an iMac - 98