M-Audio Oxygen 61 Specifications:Windows:Pentium 3 - 800MHz or higher(CPU may be higher for laptops)256MB RAMDirectX 9.0b or higherWindows XP (SP1) or higher(Windows 98, Me, Nt, or 2000 not supported)M-Audio suggests you also check the minimum requirements for you software as they may be greater than the above. Mac OS:Macintosh G3 800/G4 733MH..