USB-C označava vrstuutora, odnosno njegov oblik, dok 3.1 označava brzinu prijenosa podataka. Po prvi puta u povijesti USB-a, USB 3.1 bit će dostupan samo u obliku C.
IEC 62680-1-3:2016 (17. kolovoza 2016., izdanje 1.0) "Universal serial bus interfaces for data and power - Part 1-3: Universal Serial Bus interfaces - Common components - USB Type-C™ cable and connector specification"[2]
IEC 62680-1-3:2017 (25. rujna 2017., izdanje 2.0) "Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C™ Cable and Connector Specification"[3]
IEC 62680-1-3:2018 (24. svibnja 2018., izdanje 3.0) "Universal serial bus interfaces for data and power - Part 1-3: Common components - USB Type-C™ Cable and Connector Specification"[4]
IEC 62680-1-4:2018 (10. travnja 2018.) "Universal Serial Bus interfaces for data and power - Part 1-4: Common components - USB Type-C™ Authentication Specification"[5]
