Allows you to connect your parallel devices such as printers & scanners via a USB (Universal Serial Bus) port Especially useful for laptop computers Simple plug n play operation Bi-directional Many new computers especially laptops are being manufactured without parallel connections on them. This means older parallel devices such as printers & scanners that commonly used this connection cannot be used. This simple adaptor overcomes this problem by connecting your parallel device into any USB (Universal Serial Bus) port saving the need to buy new equipment. Requires Windowsandreg 98SE or above. Also compatible with Mac OS X or above.