HID：HID是Human Interface Device（人机接口设备）省称，这类设备是Windows最早支持的USB类别。具体到本设备，其协议完全符合HID类别规范，所以无须另外安装驱动，直接接到电脑的USB口就可以用了。因为设备电源也是由USB接口提供，所以非常方便。-HID: HID is Human Interface Device (Human Interface Device) province, said the earliest such devices are supported by Windows USB class. Specific to this equipment, in full compliance with their agreements HID class specification, there is no need to install drivers directly to the computer' s USB port can be used. Because the device power supply is provided by the USB interface, it is very convenient.