M-Audio KeyRig 49 USB MIDI Keyboard

The M-Audio KeyRig 49 turns your Mac or PC into a versatile keyboard workstation. Featuring a 49-key, synth-action USB MIDI keyboard and the award-winning Key Rig software for the PC, KeyRig 49 makes it easy to start composing and performing music with a computer. Use KeyRig 49 to play Key Rig’s virtual instrument sounds, or audition loops and compose songs with M-Audio’s Session, Apple’s GarageBand, Ableton’s Live Lite (included) or other music-creation programs. The KeyRig 49 keyboard also includes professional features like pitch and mod wheels, an assignable volume slider, octave +/- buttons and sustain pedal input. It’s powered via a single USB cable and works instantly with computers running Mac OS X or Windows XP.

M-Audio KeyRig 49 USB MIDI Keyboard Features:
-49-note velocity-sensitive synth-action keyboard 
-assignable modulation wheel and volume slider 
-pitch bend wheel 
-assignable octave +/- buttons 
-edit mode button 
-sustain pedal input 
-USB 2.0 and USB 1.1 compatible 
-connection and power via a single USB cable 
-instant installation on Mac OS X and Windows XP computers—just plug and play 
-includes Ableton Live Lite music creation software
-includes award-winning M-Audio Key Rig software (PC only) featuring:
  -four top-quality virtual sound modules: SP-1 Stage Piano, MS-2 Polyphonic Synthesizer, MB-3 Tone Wheel Organ and GM-4 General MIDI
  -use stand-alone or with a sequencer
  -variable velocity and controller settings
  -split and layer modules for performance combinations
  -module and master effects processors
  -compatible with most popular software 

M-Audio KeyRig 49 USB MIDI Keyboard System Requirements:
-PC
  -KeyRig 49 keyboard
    -Pentium 3 800MHz (CPU may need to be higher for laptops)
    -256 MB RAM
    -DirectX 9.0b
    -Windows XP (SP2)* (Windows 98, Me, NT, or 2000 not supported)
  -Key Rig software
    -Pentium III 500 MHz or AMD7 (P4 / Athlon 1 GHz or faster recommended)
    -256 MB RAM
    -600 MB free hard disk space
    -Windows XP*
    -VST 2.0 compatible host software
    -CD-ROM drive for installation
    -Internet connection (on any computer) for software activation
    -ASIO-compatible soundcard for standalone operation
 -Mac
  -Macintosh G3** 800/G4** 733MHz (CPU may need to be higher for laptops)
  -OS X 10.2.8 w/ 256 MB RAM,
  -OS X 10.3.4, 10.4, 10.5.1 w/ 512 MB RAM

M-Audio suggests you also check the minimum system requirements for your software, as they may be greater than the above. 

*Home and Professional Edition only. Windows Meda Center Edition is not supported.
**Native USB port required; G3/G4 accelerator cards not supported