RS232 driver is specially used to solve the USB to serial port on the computer driver package, now many computer motherboards have no nine-pin serial port interface, if you want to convert the USB on your computer into a serial port, then you need to use the USB to serial port driver to help users better carry out a variety of external device testing work.
RS232 is a level standard that uses UART asynchronous communication serial data bus protocol. Industrial level standards RS422 and RS485 also use the UART protocol.
It is a standard interface like a network card and generally does not require a driver.