Note: for some compatible device, it might take a few seconds for the video to display. Portable adapter connects a DisplayPort (DP, DP++, DisplayPort++) equipped laptop or desktop to an HDTV, monitor, or projector with HDMI input; An HDMI cable (sold separately) is required Transmits high-definition audio and video from your computer to an HDTV for video streaming or gaming; Supports video resolutions up to 4K and uncompressed digital 7.1, 5.1 or 2 audio channels Gold-plated connectors resist corrosion, provide durability and improve the signal transmission