USB Type-A, Type-B, Mini USB, Micro USB and USB Type-C are various types of USB connectors. Each type is used in different applications: Type-A (computers and chargers); Type-B (printers); Mini USB and Micro USB (outdated mobile devices). The most recent standard, USB Type-C, offers a reversible design for user convenience, high-speed data transfer for advanced protocols and high-power delivery supporting increased power output.