The "Matias RGB Backlit Wired Aluminum Keyboard for Mac" is an enhanced USB keyboard. It has the reliable and traditional USB 2.0 connection, with a 1 port USB 2.0 hub, numeric keypad, classic aluminum frame, and all the special Mac functionality you expect on the function keys. However, it also has RGB backlighting; this means you can turn on backlighting for times where you want more light, and use the convenient color control dial to choose any color you want for the backlighting. Perhaps you would like your white backlighting to have reduced blue in it, to avoid disrupting your sleep, or perhaps you want your backlighting to be red, green, blue, yellow, magenta, or any other color to express your individuality. You just rotate the color control dial on the Matias keyboard to change the color. No software is needed.