Don't waste the parallel port on your inkjet, laser, or high speed printer. This cable uses the USB port on your PC or hub, so your parallel port remains free for a zip drive or scanner. Forget the hassles of IRQ sharing by adapting your printer to USB. If you have multiple printers, you can eliminate the need for a switchbox by connecting each printer to a USB port.The device is fully transparent to the user, and is ideal for true bi-directional communication. This adapter auto-negotiates hardware recognition for faster protocol setup, and is fully plug-and-play compatible.