Apple's line of Macbook and Macbook Pro laptops come with "mini-DVI video out" ports that require a special adapter to connect to an external display. Some TVs and video displays have HDMI video capabilities, allowing them to display high-resolution, larger versions of what is being displayed on the Macbook. Videos, photos and gaming are examples of activities that can be experienced on a larger screen. One adapter is all that is needed to make the connection possible.
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Connect the Mini-DVI end of the adapter to the "mini-dvi" port on the Macbook. This is located on the left side of the laptop in between the "Firewire" and "USB" ports.
Connect the HDMI end of the adapter to one of the "HDMI video in" ports on the back of the TV or video display.
Turn on the TV or display and set the "Source" or "Video" to the appropriate HDMI video input. You may need to press the "Source" or "Input" button multiple times on the TV or remote until you see the Macbook's display on the screen.