The built-in USB hub has three USB ports add easy access and convenience for input devices like flash drives or a mouse. Membrane key switch technology is a top of the line design when it comes to keyboards. With the smooth quiet action of the membrane keys, you can input faster than you ever imagined smoothly and quietly with with minimal clicking and noise. In addition, the key switches are rated at 5 million keystrokes with a 45-50 actuation force. Control your media player and browse the Internet with just one key using the built-in Multimedia and Internet hotkeys for easy access to your favorite media or websites.