Given much faster transfer rate up to 5. 4Gbps per lane. It increase the video data bandwidth to 2160Mbytes/sec, providing support for emerging display applications Enables full 4K x 2K resolution(Only HDMI Port), 3D stereo beyond full HD, Supports video resolutions up to 3840*2160 and support stereoscopic images beyond full HD, Please be aware that with an OS X Mavericks update (10. 9 and later) Apple disabled 4K output on the vast majority of prevous Mac models. For a list of 4K-compatible Mac systems, please google HT202856 Mini DP V1. 2 version, also support DP V1. 1, transmits both Audio and video from computer or tablet to HD display via HDMI; Macs made before 2010 are not able to output audio over Mini DisplayPort. More info and then check the model identifier field in hardware overview