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If you want to use an Apple iMac as a PC monitor, you can find step-by-step instructions here. Because some iMac models you can use the so-called Target display mode set up as a "target display", ie as a target display for an external device. It's basically pretty quick, but it requires a few prerequisites. In this guide you can read what you need to know about the topic and what the exact procedure is. Do you have any questions, tips or tricks on the subject in store? Then leave a comment;)
In an older manual, we already showed you how to do one use old iMac as Mac monitor can. At that time it was not yet clear to us whether and how the whole thing could also be transferred to a Windows PC. But now we have stumbled upon an opportunity that we do not want to withhold from you. To use the iMac as a Windows PC monitor, proceed as follows - and first have to answer a few questions ...
Not every Apple iMac is available for Target Display Mode. Look in the Apple menu under “About this Mac” to see which model you have. You can also see which operating system (Mac OS X, OS X or macOS) is running on it. And see what connections your iMac has on the back. Because the following requirements should be met:
In addition, your Windows PC or laptop should have a suitable video output, e.g. DisplayPort or Thunderbolt. With an adapter or a suitable adapter cable, you can also use the HDMI output to transmit the signal to the Thunderbolt or DisplayPort input of the iMac.
When buying, make sure that it is an HDMI-to-Mini-DisplayPort cable or adapter. There are also “one-way streets” cables from Mini-DisplayPort to HDMI, with which you can connect MacBooks to external monitors, for example. So read carefully the product descriptions of the items with which you want to prepare yourself for the following procedure.
If your iMac is compatible, you have a suitable cable and are ready to transfer, then you're good to go. These are the step-by-step instructions in case you want to use the iMac as a Windows PC monitor:
The key combination when iMac is started activates Target Display Mode, which means that the Apple computer can be used as a monitor for incoming video signals. You shouldn't have to choose anything now. The transfer should work directly (as soon as the PC delivers an image).
If you want to display the PC image perfectly on the more or less improvised monitor, then check the resolution of the screen in the above-mentioned “About this Mac” window in the “Display” tab after a regular macOS start. Most of the time, however, a resolution of 2.560 x 1.440 pixels should be sufficient. If your PC can provide a higher image output to get closer to the number of pixels on the iMac screen, that's all the better, of course. In the case of Retina models with 4K or 5K resolution, however, the target display mode may not be supported at all.
Have you already tried the whole thing or played through the points indicated after reading this article? Then leave your experiences as a comment. Because we have not yet tested the procedure, we have only translated information from an English specialist website and added a few notes. So if you have practical experience, let us and all other readers participate :)
After graduating from high school, Johannes completed an apprenticeship as a business assistant specializing in foreign languages. But then he decided to research and write, which resulted in his independence. For several years he has been working for Sir Apfelot, among others. His articles include product introductions, news, manuals, video games, consoles, and more. He follows Apple keynotes live via stream.