Edirol PCR-M1 S.L.I.M. USB MIDI Keyboard Controller Utilizes "S.L.I.M." keys MIDI in/out ports 3-way power supply Downloadable memory sets V-link Utilizes "S.L.I.M." keys MIDI in/out ports 3-way power supply Downloadable memory sets Features 3-way power supply Has Down-loadable memory sets Features V-link