The ICUSB232INT2 USB (Universal Serial Bus) to serial adapter lets you add 2 RS232 ports 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.