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, game controllers and alphanumeric display devices.

Human Interface Devices (HID) is a device class definition to replace PS/2-style connectors with a generic USB driver to support HID devices such as keyboards, mice, game controllers, and so on. Prior to HID, devices could only utilize strictly-defined protocols for mice and keyboards.

USB devices fall into the "USB-HID" class. That includes common things like keyboards, mice, webcams, trackpads, and gaming controllers. Other USB-HID devices include thermometers, audio instruments, medical equipment, phones, and exercise machines. The other common type is Bluetooth-HID.

A human interface device or HID is a type of computer device usually used by humans that takes input from humans and gives output to humans. The term "HID" most commonly refers to the USB HID specification.

HID USB Device Class Definition The Device Class Definition for HID 1.11 is intended to supplement the USB Specification and provide HID manufacturers with the information necessary to build USB-compatible devices. It also specifies how the HID class driver should extract data from USB devices.