NULEA M501 Manual Del Usuario página 12

DPI Mode
There are 5 DPI levels, please press the DPI button to adjust for your preference.
When you press the DPI button, the red light flashes once/twice/three times/four
times /five times, corresponding to DPI 100-200-400-800-1200.
If the maximum DPI still fails to meet the usage requirements, You can also
adjust the DPI on your computer.
For Windows: Start Microsoft Mouse and Keyboard Center, select the mouse
you are using, click basic settings, locate Sensitivity, make your changes.
For Mac: Open the System Preferences menu, click "Mouse", move the slider
under "Tracking Speed" to adjust DPI.
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