Micro-Star 52X CD INT EIDE (MS-8152) Great Noise Spoiler System Dual Radiation (Heat-Free) System Shortest Body Shape Front Panel: Volume Control Knob, Headphone Jack, Emergency Eject Hole (allows manual disk unloading without power on), Stop/Eject Button, Play/Skip Button (plays or skips songs directly on the panel, functionally convenient as a CD player), Busy Indicator Compatible OS Systems include: DOS 6.X, WindowsR 3.1, 95, 98, NT, 2000, Me, XP, OS/2 Warp