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How to Use iMac As a Monitor for PC [Step-by-Step Guide]

Updated on Monday, May 13, 2024

iBoysoft author Jessica Shee

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Jessica Shee

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A Guide on How to Use iMac as a Monitor for a Windows PC

use iMac as monitor for PC

iMacs often come with high-resolution Retina displays that offer vibrant colors, sharp images, and wide viewing angles, making them ideal for tasks like photo and video editing, graphic design, gaming, and media consumption. If you have both iMac and Windows computers, it is a good idea to set up your iMac as a second monitor for PC for either work or leisure purposes.

This article will elaborate on how to use iMac as a monitor for PC for you. Read on.

Requirements for your iMac

Unfortunately, not every iMac can be used as an external monitor for a Windows computer. Only certain older iMac models that have a feature called Target Display Mode can be used as an external display when plugged into another computer.

The requirements for different iMac models vary. Check your iMac model and make sure your device meets all requirements below.

  • Your iMac is running macOS 10.13 High Sierra or earlier. If your iMac has a newer version of macOS installed, follow this guide to install older versions of macOS on your iMac.
  • The cable connecting the iMac and PC computers must be a Thunderbolt or Thunderbolt 2  cable if your iMac model was introduced in 2011, 2012, 2013, and mid-2014, or a Mini DisplayPort cable for an iMac model introduced in 2009 and 2010.

iMac with Thunderbolt port

iMac with Mini DisplayPort

After verifying that the Target Display Mode feature is available on your iMac, you can proceed to use the iMac as a monitor for your PC.

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How to use iMac as a monitor for PC

If you are using a Windows PC with a lower-quality display, connecting it to the iMac allows you to benefit from the iMac's superior Retina display. In addition, by setting up an iMac as an external monitor, you can repurpose an older iMac that might not be as suitable for your current computing needs.

Here is how:

Step 1. Turn on both computers and connect the iMac to PC

Plug one end of the Thunderbolt cable or Mini DisplayPort cable into the iMac and the other end to your Windows computer. If your Windows computer doesn't have those ports, you can easily get an adapter.

Step 2. Enter the Target Display Mode on iMac

After the cable has been correctly linked between the iMac and PC, your iMac will start mirroring your PC automatically. If not, you can press the Command + F2 key combination on your iMac's keyboard to enter the Target Display Mode. Now, you will see what shows up on your PC screen appear on the iMac's screen.

Step 3. Adjust the optimal screen resolution on the PC

When connecting to an external monitor, your PC should adjust the screen resolution to achieve optimal picture quality. To change the screen resolution, right-click on the desktop and choose Display settings (Personalize, Screen resolution, or anything similar). Scroll down to the Display resolution section and click the box to see your available options. If 2560 x 1440 or higher resolution is available, select that. If not, choose the best resolution possible.

Step 4. Exit the Target Display Mode

It is simple to stop using iMac as a monitor for PC, just disable the Target Display Mode by pressing Command + F2 again and disconnecting the cable from both computers.

It is simple to use an iMac as monitor for a Windows PC, right? Let others know you did it!



iMac's high-resolution Retina screen makes it one of the best monitors out there. Using it as an external display gives you a bigger and clearer experience for both working and leisure. If you have an older iMac and a PC, follow the steps in this article to use iMac as monitor for PC.