works on my side...
it is this keyboard:
M-Audio
Keystation 49E Full Size 49-Note Keyboard ( Windows PC / Mac )
$99
The Keystation 49e the perfect USB MIDI controller keyboard for getting started with music on your Mac. Class-compliancy with OS X means true plug-and-play operation—and the included Maximum Audio Tools software bundle is designed to get you playing immediately. Despite it’s simplicity, the Keystation 49e includes a 49-note full-size, velocity-sensitive keyboard for authentic playing experience, as well as built-in MIDI interface, pitch and modulation wheels, and sustain pedal input. This sleek, compact keyboard is USB bus-powered, requiring no external power supply. Compatible with most educational and studio software, the affordable Keystation 49e is the perfect companion to begin your musical journey with.
49-note full-size, velocity-sensitive keyboard
pitch bend and modulation wheels
volume/control slider
advanced function button for programming
sustain foot pedal input
octave +/- buttons to extend keyboard range
separate MIDI out jack routes MIDI signals from your computer to control external devices
powered via USB or 9VDC power adapter (not included)
functions as a standalone USB MIDI interface
class compliant with OS X and Windows XP for plug-and-play
also includes drivers for Mac OS 9.1 and later, and included for Windows 95/98/ME/2000
System Requirements PC
Windows 98SE / Me / 2000 (SP4) / XP (SP1)
System Requirements Mac
OS 9.2.2 with OMS 2.3.8 (included)
OS X 10.1.5 or greater
OMS 2.3.8 (included) for MIDI under OS 9.2.2
* native USB port required; G3/G4 accelerator cards not supported