[Keypad] 2 3 keys programmable keypad for macros and rhythm games.Hot-swappable HID Standard Keypad with Cherry Red Switches. [Programming] Programming is fairly straightforward, and the programming app has an understandable English translation. In addition to standard macros, it can do many other things, including simulating a mouse. [Device] It will save your instructions on the device. After programming it, you don’t need to set it up again when you change the computer. (If you want to use it on MAC or LINUX system, you need to pre-set it on WINDOWS system). [Help] If you encounter any problems with the keypad, please contact us, we will help you deal with it as soon as possible. [Package Listing] 1*mini 2 3 keys keypad 1*shaft-puller 2*black keycaps 2*white keycaps 1*5in long USB-C data cable 1*Instructions