1、Multiple Function: Default copy and paste function, can also set shortcut key, cut, undo, redo, select all, play, pause, volume, switch song, forward, backward, customize scripts, etc. 2、Programming: The computer single keyboard is programmable design, which is simple and convenient in operation, and support for standard macros, analog mice, and other functions. 3、Instruction Save: The instruction is saved on the device, no need to reset it when replacing the computer after programming. If it is for OS X or for Linux system, it needs to be pre set for Windows. 4、Durable ABS Material: Made from excellent ABS material, this USB keypad is sturdy and durable, which can withstand daily use and provides a reliable and long lasting performance. 5、Compact Size: With compact size and portable design, this USB custom keypad is designed to fit seamlessly into your work space, it will not take up too much space on your desk.