... , laser power: less than 5mw 3, the laser wavelength: 650nm 4, RF power: 0dbm 5, the trackball Resolution: 400DPI 6, laser range ... USB2.0 interface, plug and play, no special drivers 10, the operating system: windows98/winME/2000/2003/XP/VISTA/Linus & Macos 11, maximum ...