MIDI to USB cable: connecting an electronic musical instrument to your computer Connector: USB-A type and 1-in/1-out MIDI interface Built-in driver Unlike others, it requires no driver installation True plug & play; just plug it to any usb port on PC & it'll install itself 16 MIDI input channels/16MIDI output channels MIDI activity indicators for each port USB bus powered; Requires no external power Extremely compact and lightweight Length: 2.0m Support Windows XP/Vista/Mac OS X It's easy to turn your PC into a music studio. Start by connecting an electronic musical instrument to your computer with the supplied USB MIDI interface. Within minutes you'll be able to play songs while they are being recorded on your PC! With appropritate software, you can overdub additional instruments, then edit, mix and even print sheet music of your final compositions