USB Implementers Forum in the context of Universal Serial Bus

USB‑C, or USB Type‑C, is a 24-pin reversible connector (not a protocol) that supersedes all previous USB connectors, which were designated legacy in 2014. This connector also supersedes Mini DisplayPort and Lightning connectors. USB-C is used for a variety of purposes: exchanging data with peripheral devices, such as external drives, mobile phones, keyboards, track-pads, and mice, or between hosts, or transferring A/V-data to displays and speakers, or also powering peripheral devices and getting powered by power adapters; either through directly wired connectors, or indirectly via hubs and docking stations. This connector type can be used for other data transfer protocols besides USB, such as Thunderbolt, PCIe, DisplayPort, and HDMI. It is considered extensible, allowing the support of future protocols.

The design for the USB‑C connector was initially developed in 2012 by Intel, Apple Inc., HP Inc., Microsoft, and the USB Implementers Forum. The Type‑C Specification 1.0 was published by the USB Implementers Forum (USB-IF) on August 11, 2014. In 2016 it was adopted by the IEC as "IEC 62680-1-3".

Universal Serial Bus (USB) is an industry standard, developed by USB Implementers Forum (USB-IF), for digital data transmission and power delivery between many types of electronics. It specifies the architecture, in particular the physical interfaces, and communication protocols to and from hosts, such as personal computers, to and from peripheral devices, e.g. displays, keyboards, and mass storage devices, and to and from intermediate hubs, which multiply the number of a host's ports.

Introduced in 1996, USB was originally designed to standardize the connection of peripherals to computers, replacing various interfaces such as serial ports, parallel ports, game ports, and Apple Desktop Bus (ADB) ports. Early versions of USB became commonplace on a wide range of devices, such as keyboards, mice, cameras, printers, scanners, flash drives, smartphones, game consoles, and power banks. USB has since evolved into a standard to replace virtually all common ports on computers, mobile devices, peripherals, power supplies, and manifold other small electronics.

In computing, the USB human interface device class (USB HID class) is a part of the USB specification for computer peripherals: it specifies a device class (a type of computer hardware) for human interface devices such as keyboards, mice, touchscreen, touchpad, game controllers and alphanumeric display devices.

The USB HID class is defined in a number of documents provided by the USB Implementers Forum's Device Working Group. The primary document used to describe the USB HID class is the Device Class Definition for HID 1.11.