Connect your Mini DisplayPort or Thunderbolt equipped PC or Mac to a 4K HDMI video display using this Mini DisplayPort 1.2a /Thunderbolt to 4K HDMI Passive Adapter from Monoprice! This adapter is designed to allow you to connect an HDMI display to a Mini DisplayPort or Thunderbolt video output. It conforms to the DisplayPort 1.2a standard and supports HDMI resolutions up to 4K (3840x2160p) @30Hz. Being a passive adapter, it is NOT compatible with the AMD Eyefinity and NVidia Surround modes. It features a true 6" cable length with polycarbonate connector heads. The VGA end has panel screw holes, so you can secure the cable to the connector. The MDP connector head measures 14.0mm thick, 16.0mm wide, and 24.0mm long. The HDMI connector head measures 17.5mm thick, 27.5mm wide, and 47.0mm long.