NANGE M77 5 Buttons Ergonomic Adjustable 4000 DPI 6 Colors Change USB Wired Professional Optical Gaming Mouse (Black) Adjustable DPI Switch:500 DPI/1000 DPI/1500 DPI/2000 DPI/3000 DPI/4000 DPI. Plug & play.This mouse is intelligent connectivity, no need to code.(No need CD driver) Compatible with Windows 7, Windows 8, Windows XP, Vista,and other OS. DPI LED color light will be constantly changed after set up(Red Green Yellow Cyan Blue Purple). Button Life:20million Times.