How to Do Dual Screen on Mac

Joel Mason

Mac, Tutorials

In this tutorial, we will guide you through the steps to enable dual screen on your Mac. Dual screen, also known as extended display, allows you to connect an additional monitor or projector to your Mac and expand your workspace.

This is especially useful for tasks that require multitasking or working with multiple windows simultaneously.

Step 1: Check System Requirements

Before setting up dual screen on your Mac, make sure you have the necessary hardware and software requirements. Your Mac should have at least one available video output port (such as HDMI, DisplayPort, Thunderbolt), and the appropriate cables to connect the additional monitor.

Additionally, ensure that you are running a compatible version of macOS.

Step 2: Connect the Additional Monitor

Start by connecting the additional monitor to your Mac using the appropriate cable. Depending on the type of port available on your Mac and the monitor, you may need an adapter or a specific cable.

Once connected, power on both your Mac and the additional monitor.

Step 3: Open System Preferences

Click on the Apple menu located in the top-left corner of your screen and select “System Preferences” from the dropdown menu. Alternatively, you can use Spotlight by pressing Command + Spacebar and typing “System Preferences” in the search bar.

Step 4: Navigate to Displays Settings

In the System Preferences window, locate and click on “Displays.” This will open a new window with display settings for your Mac.

Step 5: Arrange Displays

In the Displays window, navigate to the “Arrangement” tab. Here, you will see a representation of both your Mac’s built-in display and the connected additional monitor.

To enable dual screen, ensure that the “Mirror Displays” option is unchecked. This will allow you to extend your desktop across both screens.

Step 6: Adjust Display Settings

To optimize the dual screen setup, you can adjust various display settings. For example, you can drag and rearrange the blue rectangles representing your displays to match their physical arrangement on your desk.

This ensures that dragging windows between screens feels natural.

You can also adjust the resolution and refresh rate of each display by selecting it from the list and adjusting the settings accordingly. It’s recommended to choose the native resolution for each display to ensure optimal image quality.

Step 7: Customize Display Preferences

To further customize your dual screen setup, click on the “Display” tab in the Displays window. Here, you can adjust additional preferences such as brightness, night shift mode, and more for each individual display.

Step 8: Enjoy Dual Screen Productivity

Once you have configured your desired settings, click on the red close button at the top left corner of the Displays window to save and apply your changes. Your Mac will now extend its desktop onto the additional monitor, providing you with a larger workspace to work with.

With dual screen enabled on your Mac, you can now enjoy enhanced productivity by multitasking seamlessly between different applications and organizing your workflow more efficiently.


In this tutorial, we have learned how to enable dual screen on a Mac. By connecting an additional monitor and configuring display settings through System Preferences, you can expand your workspace and increase productivity.

Remember to check system requirements and use compatible cables for a successful setup. Now go ahead and make the most of your dual screen setup!

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