If a USB-hub is being used, it may be causing a power shortage. Please disconnect from it and try again. If not, please try another computer and/or USB-port and follow these troubleshooting steps.

1. Clean the sensor with a brush.

2. Test the mouse on a different LOD setting. (For EC-A, FK, ZA,  EC-C, FK-C, ZA-C, S-C, EC-CW seires)

    To learn more about How do you change/reset the LOD (Lift Off Distance) setting of the mouse?

If the problem persists and the product is still within the warranty period, please contact our support team.