DIY Design?Hot-swappable keyboard, you can change keycaps and key shafts as you like. Choose from 7 colours and 2 modes (gradient or light up at the touch of a button) for your RGB lighting (Mode 0 - OFF) - NOW To create your perfect gaming setup!. ?Customization? Copy Keyboard default function is "Cut" "Copy" "Paste" and "Select-All". Functions can be set via software, such as Shortcut keys, Cut, Undo, Redo, Select all, Play, Pause, Volume+/-, Switch song, Forward, Backward, Custom script, etc. ?Programming on Windows? Programming by Software(https://sikaicase.com/blogs/news/before-software-setting.)Set by Windows System. Programming app and page has an understandable English translation. Easy to use. Compatible with windows7 and above, iOS and Android. ?Mac User Notice?If you need to set it in MAC, please set it in Windows before you can use it on Mac. (USB-C cable required for setup). ?CUT COPY PASTE ALL 4Keys Pad?it comes ready to use with CUT, COPY, PASTE and SELECT-ALL keys: Plug and Play. No more finger gymnastics with all the CUTing/PASTEing...! There is no need to download ANYTHING if these are the functions that you only want. Makes workflow super fast.