Korg nanoKEY2 Slim-Line USB Keyboard Bundle with Headphones and Polishing Cloth - Black Low-profile, 25-key USB-MIDI keyboard, ideal for use with laptop and netbook computers Advanced-design keybed offers improved accuracy and velocity-sensitive keys Sustain button -- ideal for entering piano parts! Works with the "Korg Kontrol Editor" software -- available free on the Korg website Just connect a single USB cable from your computer to the nanoKEY2, and you've got a quick and portable music production system - USB Cable included - Transfers both data & power