Answer Description
USB C is an open specification used by many mobile devices like phones, tablets and laptops. It is an open specification because it is not proprietary to any single company and instead can be used in products by any vendor. A key feature is USB-C is that it is reversible while previous USB versions were not.
Wikipedia
USB-C, formally known as USB Type-C, is a 24-pin USB connector system, which is distinguished by its almost two-fold rotationally-symmetrical connector (Symmetry is broken, typically by a seam in the outer metal mating surface) The USB Type-C Specification 10 was published by the USB Implementers Forum (USB-IF) and was finalized in August 2014 It was developed at roughly the same time as the USB 31 specification In July 2016, it was adopted by the IEC as "IEC 62680-1-3"A device with a Type-C connector does not necessarily implement USB, USB Power Delivery, or any Alternate Mode: the Type-C connector is common to several technologies while mandating only a few of them
USB-C - Wikipedia, the free encyclopedia