Note: Do not leave the adapter plugged in for long periods of time if the unit is not in use. Windows XP and Mac OS X If you are using Windows XP or Mac OS X, you may simply switch the power position to “on.” Because the M-Audio O keyboard is class compliant, it will work with out any further installation.
Simply register your M-Audio product and follow the instructions from there. Octave The keyboard can be shifted up or down to give you access to a total of 11 octaves on the M-Audio O 1. Press “OCTAVE +” for every octave you want to shift the keyboard up.