Add a DB25 parallel port to your desktop or laptop PC through USB. The ICUSB1284D25 6 ft USB to DB25 parallel printer adapter cable turns an available USB port on a host PC into a DB25 female parallel port - allowing you to connect a DB25 printer to the computer as if the necessary parallel port was built-on.A cost-effective and reliable solution, the USB to DB25 adapter saves the expense of replacing a parallel printer for the sake of USB capability.