The best-selling MIDISPORT 1x1 is a one-in, one-out, USB Midi interface for Windows and Macintosh. Its single midi in and out make it perfect for connecting a keyboard or controller to your machine quickly and easily. Since it is parasitically-powered by the USB port, the 1x1 is convenient and great for laptop use. If you buy more gear, you'll have no problem expanding. It's easy to add more midiports to your system. You can add as many USB Midisport interfaces to your computer as you have USB p..