



Follow the instructions below to change the external display settings. Windows uses the term Duplicate instead of Mirroring. To turn on (or off) Desktop Mirror click the small icon of a monitor on the upper right side of the menu bar and select Turn On Mirroring Changing the Desktop Mirroring Setting Windows – Change External Display Mode Make sure that your TV, monitor, or projector is turned on. Therefore the best way to test for all three is to. Plug one end of the video cable into the port on the external screen. In Extend Mode the external display is treated as a separate screen so that you can have a different windows open on the projector and desktop. It is easy to switch between the two settings. The problem could be with the computer, the HDMI cable itself, or the monitor or TV you are connecting to. In Mirror Mode the computer monitor duplicates the monitor on the external display so that you see the same picture on both the desktop and projector. Step 1: HDMI Cable Selection: Ensuring the Right Connections and Length The first step in connecting a laptop to a projector via HDMI involves selecting the appropriate cable. When connected to an external display, Mac and Windows computers have two different display modes: Mirror and Extend.
