Black 3-button 3d USB 800 Dpi Optical Scroll Mice Mouse Blue & Purple Leds for Notebook Laptop Desktop Compatible with USB 2.0 & USB 1.1 800 dpi for accurate control The roll wheel can be easily guided pleasantly and used as the third usable key Work with: Windows98 SE/ ME/ 2000/ XP / VISTA Supports 64-bit, 128-bit WEP ; WPA