Memory:64 KB, Features: Scrolling wheel, Illuminated DPI switch, motion resolution:3600 dpi, Movement detection technology:Laser, Interface:USB, Power:1 ms response time, 1000 reports per second, Connectivity technology:Wired, Interfaces:1 x USB - USB Type A, 4-pin, Software included:OSCAR, Required operating system:Microsoft Windows 2000, Microsoft Windows XP, Microsoft Windows Vista, Microsoft Windows 2003, Cable:1 x USB cable - built-in, accessories including:Customizable weight modules