One cable between a Mini DisplayPort source and an HDMI display – no adapter or converter required For the simplest and most discreet installation, this Mini DisplayPort to HDMI cable connects your DisplayPort video source to the HDMI port on your display. It doesn’t need a power source, unlike some converter dongles that require active power and separate bulky video cabling. This cable lets you enjoy movies on a big-screen HDTV, extend your desktop to a second monitor (up to 4K@60Hz) for an expanded workspace, or show presentations on a projector at school or work without needing any other adapter or converter.