01-26-11: SakaharaAll USB devices require drivers. It would seem a UNIX/IRIX SGI, WIN DOS/NT/2K/XP, and MAC OS X administrator would know this.
I've been using computers since '95 (self taught/administrator on UNIX/IRIX SGI, WIN DOS/NT/2K/XP, and MAC OS X).
There was no mention on the M2Tech website about a driver being needed.
Did you configure the Evo to output sound via external speakers in the Apple Midi Setup application (did the application display the speaker icon next to the Evo)?

