Gaming Mouse A4tech X710BK:A computer mouse with five buttons and a scroll button for easier document control or web browsing. The new feature is the 3XFire button that triggers one click at a time. The mouse has the ability to set up to five sensors in the 400, 600, 1200, 1600 and 2000 DPI steps. The mouse has an ergonomic design, connects to a high-speed USB interface and features 16 Kb of internal memory where you can use Oscar Mouse Editor to record scripts to control your favourite games. It is fully compatible with all modern operating systems including Windows Vista. Specifications: Interface: USB 2.0Reduction in PS/2OS Compatibility: Microsoft Windows 2000/XP/2003/Vista