[Customized Settings] The default three-key functions are cut, copy, and paste (Ctrl+X, Ctrl+C, Ctrl+V). You can set shortcut keys, cut, undo, redo, select all, play, pause, volume, switch songs and other functions, forward, backward, custom scripts, etc. through the software. The 3 Mini key mechanical keyboard supports saving your commands on the device. Once programming is complete, there is no need to reset it when changing computers. [Note to Mac users] If you need to set it in MAC, please customize the settings in Windows before you can use it on Mac. After the software is set up, there is no need to open the background, just close it (requires a USB-C cable to work) DIY DesignHot-swappable keyboard, you can replace the keycaps and keyshafts as needed. Choose from 7 colors and 2 modes (gradient or light at the touch of a button) for your RGB lighting, allowing you to have fun building a custom mechanical keyboard [High-Quality Material] USB Mini 3-Key Gaming keypad su