Hot-swappable mechanical switch Allowing you to enjoy the fun of building a customized mechanical keypad. Support ergonomic design,alloy ABS material,OSU keypad gaming keyboard,USB interface and RGB backlight. Function: such as Shortcut keys, Cut, Undo, Redo, Select all, Play, Pause, Volume, Switch song, Forward, Backward, Custom script, etc. You can control the light color and gradient mode of the case you want through the software. In addition to standard macros, it can do many other things, including simulating a mouse.