This sturdy MIDI interface cable is self-powered and connects to your computer's USB port. No need for tools or computer disassembly, it's the simplest & most convenient way to connect a keyboard or controller to a computer. Gives you the power to play songs on your keyboard or other controller, then mix and edit them on your home computer/laptop with any sequencing or recording software you have installed & play them back on the built-in synth or an any out-board synth!