Features: 1) Ergonomic and optical technology design 2) Resolution: 400dpi, 800dpi 3) Supports Windows 95/98/Me/NT/2000/XP 4) Works on most of surfaces 5) No need of dust cleaning 6) Different colors available 7) Mini size Specification: 1) Resolution(dpi)：600-800 2) Key-press life：150Million 3) Scan speed:1500-3000/s 4) Compatible with windows 95/98/Me/NT4.0/2000/XP 5) Connector: PS/2,USB,Combo