Overview
This article explains how to set up multiple displays on macOS Sequoia, including how to extend your desktop to a second screen or mirror your display.
Applicable Environment
- Operating System: macOS Sequoia
- Devices: MacOS laptops and desktop (iMac and Mini) computers with support for external displays
- Use Case: Those wanting to increase screen space or duplicate their screen to another display
Step-by-Step Instructions
1. Connect the External Display
- Use a compatible cable (HDMI, USB-C, DisplayPort, etc.) or connect wirelessly via AirTame.
- Ensure both your Mac and the external display are powered on.
2. Open System Settings
- Click the Apple menu in the top-left corner of your screen.
- Select System Settings from the dropdown menu.
3. Access Display Settings
- In the left-hand sidebar, click Displays.
- Your Mac will detect the connected display and show configuration options.
4. Choose Display Mode
To Extend Your Desktop:
- In the Arrangement tab, drag the display icons to position them relative to each other.
- This creates an extended workspace across both screens.
To Mirror Your Display:
- Select the drop-down and then choose Mirror Displays.
- This will duplicate your main screen onto the second display.
5. Adjust Display Preferences (Optional), including changing resolution
- Click on each display to adjust resolution, refresh rate, and scaling options.
- If resolution options aren't displayed, click Advanced and then toggle "Show resolutions as list"
- *Note that for SCSU eclassrooms and conference rooms, 1920x1200 resolution is preferred. Other resolutions may cause the image to not properly display.
- You can also set which display is the primary one by dragging the white menu bar to the desired screen.
6. Save and Close
- Your changes are saved automatically.
- Simply close the System Settings window when you're done.