Detailed instructions for use are in the User's Guide.
[. . . ] Use the SetPoint software that comes with the mouse (1) and its Advanced Game Settings feature (2) to configure up to five personalized sensitivity levels between 400 dpi and 2, 000 dpi. Refer to the software help system (4) to learn how to choose sensitivity levels and program XY sensitivity independently and to learn more about the mouse and its software. [. . . ] English dpi LEDs show dpi settings of mouse when dpi buttons are used. 1) Top LED = Level 1 dpi Setting, 3) middle LED = Level 3, and 5) bottom LED = Level 5. When dpi settings have been programmed, 4) bottom and middle LEDs = Level 4, and 2) middle and top LEDs = Level 2. Up to five dpi setting can be programmed; three levels is the default (with or without software installation) offering default dpi settings of 400, 800, and 2, 000, respectively. Programming dpi levels requires at least one dpi setting, and all settings must be in ascending order in increments of 50 dpi or more, with no duplicate settings allowed. English Important Ergonomic Information: Long periods of repetitive motion using an improperly Set-up workspace, incorrect body position, and poor work habits may be associated with physical discomfort and injury to nerves, tendons, and muscles. If you feel pain, numbness, weakness, swelling, burning, cramping, or stiffness in your hands, wrists, arms, shoulders, neck, or back, see a qualified health professional. For more information, please read the Comfort Guidelines located on the Logitech® web site at http://www. This optical device complies with International Standard IEC 60825-1: 2001-08, Class 1 Laser Product, and also complies with 21 CFR 1040. 50, dated July 26, 2001: 1) Emission of a parallel beam of infrared user-invisible light; 2) Maximum power of 716 microwatts CW, wavelength range 832 -- 865 nanometers; 3) Operating temperature between 0°C (32°F) to 40°C (104° F). [. . . ] Logitech, the Logitech logo, and other Logitech marks are owned by Logitech and may be registered. Logitech assumes no responsibility for any errors that may appear in this manual. [. . . ]