Thunderbolt is a hardware interface that allows for the connection of external peripherals to a computer. The interface has several forms with the Mini DisplayPort being common on older models of mac computer and USB Type C connectors being used on newer models. It was initially released in its finished state on February 24, 2011. Up to six peripherals may be supported by one Thunderbolt 2 connector including: monitors, projectors, or External Hard Drives. Thunderbolt 3 greatly expands on previous iterations because of its ability to provide power to supported laptops while also providing enhanced peripheral support.