USB Type C Pinout Guide and Features: USB-C, or USB Type-C connector, is a 24-pin connector (not a protocol) that replaces previous USB connectors and can carry audio, video, and other data. 24 Pin USB Type C Pinout The 24 pin Type C Connectors has the most comprehensive functions, including the functional pin that supports PD fast charging, USB 3.0/USB 3.1, USB 2.0. Consequently, it can transmit audio, video and communication protocols and other data. USB Type C Pinout diagram of the plug: USB Type C Pinout diagram of receptacle: