The CME Mkey has the best keyboard action of any Midi Controller in its price class because it is semi-weighted and has full throw, not a hald throw action like other keyboard controllers at this price. It has an Ultra-Thin body and joystick control, 1 function button, 2 data entry buttons, 1 assignable slider and 1 power indicator LED. It has 1 USB Port and Cable, 1 Midi out, and 2 Pedal Connection jacks for any footswitch or expression pedal. It is class compliant with Windows XP and Mac OSX, and the firmware can be upgraded on the internet via USB. There is also a Note Key shortcut function. It includes 6 Professional software programs such as Samplitude SE Audio Recording, Arturia Analog Factory SE Software Synthesizer, Waldorf Edition LE software synthesizer, True Piano Demo Piano Tone Syntheszier, Key to Sound Remedy VST and Musicator MW5 VF Edition learning program. Tech support available at 800-343-0353