Compatible with Macbook, Macbook Pro, iMac, Macbook Air, Mac Mini, Surface Book and Pro Series, ThinkPad Carbon X1 Series; Compatible objective device: Projector, display, HDTV. Lightweight and portable adapter for connecting a Mini DisplayPort (Thunderbolt port) to HDMI, monitor or projector with HDMI/DVI/DISPLAY PORT cable. DP V1.2 enables hight color range (supports Full HD 4K x 2K) over standard displayport connector. Mini DP V1.2 Version, backward compatible with DP V1.1, given much faster transfer rate up to 5.4Gbps per lane to enable emerging dispaly applications.Can only convert signal from Mini DisplayPort to HDMI/DVI/DISPLAY PORT. This is not a bi-directional adapter.Please make sure the movie is 4K x 2K and make sure TV or Display support 4K x 2K resolution, then you can get the 4K x 2K image, or you only get standard image(not 4K result).