3-in-1 Mini DisplayPort to HDMI/DVI/VGA Adapter cable. Quickly connect a mini displayport compatible device to an HDTV, projector or monitor with HDMI/VGA/DVI port. Only two simple steps to use it: Step one, connect the mini display-port to your MacBook ,Surface Pro(or other compatible devices). Step two, connect the projector, HDTV or monitor( one device )to the corresponding port.
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