HOW TO CUSTOM MOUSE: * 1. Download the macro programming software through this website: Just copy the content in the frame and paste it on your website bar to transfer to the website (drive. google. com/file/d/1Rg4hotD2fYvhYjc_wYciSvdpomG3MUeC/view? usp=sharing) * 2. When the mouse is successfully connected and used normally, Open the J300 macro programming software directly to use the macro programming function. * 3. When settings is done, click “Application”, and click “Save the Configuration”. You should boot the driver again when next use so that all the self-defined functions can be used.