The HDMI to Digital Visual Interface (DVI) adapter cable allows you to connect your Mac to a device with an HDMI port, such as a Digital Visual Interface (DVI)-integrated screen or projector.
Use an external screen as your main display, extend your desktop to a second screen, or work in mirror mode with a projector to display what your audience sees.
The HDMI to DVI adapter cable can also be used to connect to a single-link DVI interface, such as an Apple Cinema Display (20-inch or 23-inch), which includes a DVI connector.
Refer to documentation or check with your display manufacturer to ensure you select the appropriate adapter.