Optical Wheel Mouse
Meet the mouse from Logitech with the latest in optical sensor technology. Thanks to the 400 dpi sensor, it works with pinpoint cursor accuracy on virtually any surface. The Optical Wheel Mouse II supports both USB and PS/2 interfaces (PS/2 adapter included).
Fujitsu Optical Wheel Mouse. Device interface: USB+PS/2, Movement detection technology: Optical, Movement resolution: 400 DPI. Color of product: White. Cable length: 72.8" (1.85 m). Mouse weight: 4.94 oz (140 g). Compatibility: IBM PC, Compatible operating systems: Microsoft Windows 2000 Microsoft Windows XP