Most Apple Devices uses mini-Displayport (Same physical port size as Thunderbolt port) such as Macbook Pro, Macbook Air and also PC Graphics cards with mini-DP port video outputs.
DisplayPort is a technology that is looking to replace DVI and VGA as a video connection. The mini-DisplayPort cable is notably smaller than both of these technologies and includes a snap-lock connector to make connecting and disconnecting simple. Display Port will most likely become the new standard for high end video equipment. It is capable of carrying a high bandwidth digital audio and video signal.
•8.64 Gbit/s forward link channel supports high resolution monitors up to 2560×1600 with single cable.
•8B/10B data transmission (up to 2.7 GHz symbol rate, up to 4 lanes, 8B/10B modulation).
•Open and extensible standard to help with broad adoption.
•Supports color depth of 6, 8, 10, 12 and 16 bits per component.
•Full bandwidth transmission (2560x1600p60)
•DisplayPort connector assists in blind connection.
•128-bit AES DisplayPort Content Protection (DPCP) support, and support for 40-bit High-bandwidth Digital Content Protection (HDCP) from version 1.1 onwards.
•Supports internal and external connections so that one standard can be used by computer makers reducing costs.