Switching between Mirror/Duplicate and Extended display modes

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Overview
Setting the display view on a Windows PC
Setting the display view on a Mac
Troubleshooting

Overview

If you are connecting your computer using a cable or adapter to a second display such as an external monitor or a Zoom Room, you can set the second display's mode to either Mirror/Duplicate or to Extended. Below, we provide instructions for switching from Mirror/Duplicate (default) to Extended mode, but you can also use these instructions to switch in the other direction.

Before you begin

You will need a physical cable or adapter to connect your computer to the external monitor or Zoom Room.

Setting the display view on a Windows PC

Access display settings on a Windows 11 PC

Quick guide

First, make sure that your computer is connected to the external monitor or Zoom Room.
Right-click anywhere on your desktop background and select Display settings from the dropdown.
Click Duplicate these displays and select Extend these displays from the dropdown.
Click Keep changes.

Detailed guide (with screenshots)

First, make sure that your computer is connected to the external monitor or Zoom Room.
Right-click anywhere on your desktop background and select Display settings from the dropdown.
Click Duplicate these displays, and select Extend these displays from the dropdown.
Click Keep changes.

Access display settings on a Windows 10 PC

Quick guide

First, make sure that your computer is connected to the external monitor or Zoom Room.
Right-click anywhere on your desktop background and select Display settings from the dropdown.
Scroll down to the "Multiple displays" section.
Click Duplicate these displays and select Extend these displays from the dropdown.
Click Keep changes.

Detailed guide (with screenshots)

First, make sure that your computer is connected to the external monitor or Zoom Room.
Right-click anywhere on your desktop background and select Display settings from the dropdown.
Scroll down to the "Multiple displays" section.
Click Duplicate these displays and select Extend these displays from the dropdown.
Click Keep changes.

Setting the display view on a Mac

Access display settings on a Mac (Ventura OS and later)

Quick guide

First, make sure that your computer is connected to the external monitor or Zoom Room.
Go to the Apple menu > System Settings… > Displays.
Click the icon for the external monitor or Zoom Room.
In the "Use as" field, click Mirror and select Stop Mirroring from the dropdown.
The settings refresh: make sure that the "Use as" field now displays Extended display.
Close the settings.

Detailed guide (with screenshots)

First, make sure that your computer is connected to the external monitor or Zoom Room.
Open the Apple menu (Apple logo in top left corner of your desktop). Select System Settings… from the dropdown.
In the left menu, click Displays.
Click the icon for the external monitor or Zoom Room.
In the "Use as" field, click Mirror and select Stop Mirroring from the dropdown.
The settings refresh: make sure that the "Use as" field now displays Extended display.
Close the settings.

Access display settings on a Mac (Monterey OS and prior)

Quick guide

First, make sure that your computer is connected to the external monitor or Zoom Room.
Go to the Apple menu > System Preferences… > Displays.
Click Display Settings…
Make sure the external monitor or Zoom Room screen is selected (should be the second option on the list).
In the "Use as" field, click Mirror and select Stop Mirroring from the dropdown.
The settings refresh: make sure that the "Use as" field now displays Extended display.
Click Done and close the settings.

Detailed guide (with screenshots)

First, make sure that your computer is connected to the external monitor or Zoom Room.
Open the Apple menu (Apple logo in top left corner of your desktop). Select System Preferences… from the dropdown.
Click Displays.
Click Display Settings…
Make sure the external monitor or Zoom Room screen is selected (should be the second option on the list).
In the "Use as" field, click Mirror and select Stop Mirroring from the dropdown.
The settings refresh: make sure that the "Use as" field now displays Extended display.
Click Done and close the settings.

Troubleshooting

External monitor not detecting your computer

If you are using an external monitor, you may need to use the buttons on the monitor, typically located near the power button along the bottom or right edge. It may be the case, for instance, that you are using a DP cable but the monitor's input is set to HDMI or miniDP.

You can also try unplugging the monitor and turning it off, and then plugging it back into your computer and turning the monitor on.

Zoom Room not detecting your computer

If you are using a Belkin multiport adapter and the Zoom Room doesn't detect your computer after 5 seconds, press and hold the reset button on the side of the adapter until the screenshare begins.

If nothing displays on the Zoom Room screen, and the screen itself appears to be dark or off, make sure that the Zoom Room is on:

If the Zoom Room has an iPad controller: Tap Room Controls on the controller and then use the options to wake up or turn on the monitor, projector, or screen.
If the Zoom Room does not have an iPad controller: It is a touchscreen. Tap anywhere on the touchscreen to wake the screen.