The ICUSB232INT1 USB (Universal Serial Bus) to RS232 Serial Adapter lets you add an RS232 port to any desktop system that is equipped with an available USB (Universal Serial Bus) motherboard header. Unlike standard USB (Universal Serial Bus) to serial cables, this cable is designed for use inside the PC case, affording an entirely internal solution with no mess or extra adapters needed. This compact & simple USB (Universal Serial Bus) adapter offers a cost-effective solution that bridges the compatibility gap between modern computers & legacy serial peripherals.