USB NFC read-write module, which is connected with the host through USB to UART chip CH340, supports Windows, Android, Linux and MacOS systems, and is officially driven. It is set as a serial port device in the system, and sends instructions to the module through the serial port, which can realize the processing of ISO14443A protocol cards (mifare one S50, S70, F08, UltraLight Ntag213/215/216, etc.).