Read: How to Speed Up an Older iMac In any case, if you happen to have a spare iMac lying around and need a second display, here’s how to use an iMac as a second monitor.

I recently shared a post talking all about how you can use your iPad as a portable display for your Mac mini. Surprisingly the number one question i got was “can you use an old iMac or Macbook ...

If you have an iMac made in mid-2011 or later, here is how you can use it as an external monitor.

You have an old iMac that has a perfectly good display. Wouldn't it be great if you could use it as a second monitor with your new MacBook Air. You can, but you may be underwhelmed by the results.

Universal Control is coming in macOS Monterey, but you can use any device as a second monitor right now with the right software or accessories.

A patent granted to Apple describes an iMac with a built-in projector.