Mini DisplayPort 1.2 (Mini DP or mDP)/Thunderbolt 2 port computer to an HDTV/ monitor/ projector with HDMIinput;Lightweight and portable adapter .A separate HDMI cable (sold separately) is required. Transmits both audio and video from computer or tablet to HDTV display,Supports resolution of 4Kx2K@30Hz,1920 x 1200，1080p(Full HD), 720p, and flawless audio pass-thru for uncompressed digital 7.1, 5.1 or 2 channels. Gold Plated contact, transmits both audio and video. Only support Mini DP input connected computer and HDMI output connected monitor, TV or projector, cannot be bidirectional. Power Sources from Mini DisplayPort Side to HDMII Port.