3-in-1 Multimedia Combo; Multimedia Keyboard, Optical Mouse, Speakers PS/2. Great for VARs or system integrators. Black multimedia keyboard, PS/2, with membrane keys. 400 DPI Optical PS/2 mouse, black with scrolling wheel. PMPO 300 Watt Max speakers 20-20 Khz, Lifelike Sound. Speakers include built-in volume control and stereo headphone jack. Windows 98SE and above, works with NT