How to Use iMac As Monitor Properly and Easily within A Few Clicks

Lisa

June 02, 2020 09:00 / Posted by Lisa Ou

iMac is equipped with a larger screen and can work as an HDTV display being used with DVD and Blu-ray players. It carries a Target Display Mode feature to provide a secondary display for other devices. If you have both an iMac and a MacBook, you can use iMac as external monitor. In that case, you can get a bigger screen for the display.

How to Use iMac As Monitor

What if you only have an iMac and want to use iMac as monitor for PC? Do you know how to use your iMac as a display for a Windows computer? Here in this post, we will show you 2 detailed guides to use iMac as monitor for PC and MacBook.

1. How to Use iMac As Monitor for PC

When you want to use iMac as monitor for PC, you should make sure both your iMac and Windows PC have some hardware support.

The 27-inch iMac with Mini DisplayPort, iMac with Thunderbolt port, PC with a Mini DisplayPort and a supported video cable, and PC with HDMI port and a HDMI to Mini DisplayPort converter can make the connection and use iMac as monitor for PC. The Retina 5K iMac can't be used as Target Display Mode display.

To iMac as external monitor for PC, you need to connect them together with a Thunderbolt cable. So your PC should have a Thunderbolt port. Here you need to plug one end of the cable into the HDMI, Display Port, Thunderbolt port on your PC and plug the other end into your iMac.

Back to your iMac, and press Command + F2 (Command+ Fn + F2) on the keyboard to put your iMac into the Target Display Mode. Under this mode, your iMac can be be used as a secondary display. Then you can see the content of your PC screen display on your iMac.

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2. How to Use iMac As an External Monitor for MacBook PC

If you want to use iMac as external monitor for MacBook, you need to rely on a Mini DisplayPort or Thunderbolt cable to connect two Apple devices together.

First, you need to make sure your iMac is running OS X v10.6.1 or a later version.

Turn on your iMac and MacBook, connect them with a Mini DisplayPort or Thunderbolt cable. Ensure both computers are turned on and awake.

Press Command + F2 (Command+ Fn + F2) on the keyboard of your iMac to put it into the Target Display Mode. Now you can use iMac as monitor for the MacBook.

If you want the iMac to play audio and video from your MacBook, here you need to choose Apple menu > System Preferences > Sound > Output to confirm the operation.

3. FAQs of Using iMac As Monitor

Question 1. What is Target Display Mode?

Target Display Mode (TDM) was introduced in 2009 with the release of the 27-inch iMac. It allows Mac users to use iMac as external monitor by plugging a compatible device into iMac’s Mini DisplayPort. Then users can gain exclusive use of the iMac’s display. Target Display Mode can accept DVI and HDMI sources from the DisplayPort. That means, besides Apple products, any computer, game consoles, or video devices using these standards can work with Target Display Mode and use iMac as a monitor.

Question 2. Can I use my 2015 iMac as a monitor?

In general, you can easily use an old iMac as external monitor. But some newer iMac models like the iMac (Retina 5K, 27-inch, Late 2014) and later iMac models can't be used as Target Display Mode displays.

Question 3. How to mirror iPhone screen to iMac?

When you have the need to mirror your iPhone screen to Mac, you can rely on the QuickTime Player. You can connect your iPhone to iMac or MacBook with a lightning USB cable and then open the QuickTime Player on your Mac. Click File and then choose the New Movie Recording option from the drop-down list. Click the pop-up Options menu and then choose Your Connected iPhone. By doing so, you can see your iPhone screen appears on the Mac computer.

After reading this page, you can handily use iMac as monitor for PC and MacBook. Also, you can learn some basic information about the Target Display Mode. If you still have any questions about using iMac as external monitor, don’t hesitate to contact us.

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