3 Built-In USB Ports - 3 Port USB hub, adds easy access and convenience to plug in additional input devices such as flash drives, and mice. Multimedia Controls - Control your media player with just one touch using the builtin Multimedia Hotkeys for easy access to your favorite video or music playlist. Windows One-Touch Controls - Instantly open your favorite Windows applications, such as My Computer, Calculator, Mail, or Search without having to navigate with your mouse. Quiet Membrane Key Switches - Membrane key switches provide a better tactile response and a quieter typing experience. Plus they last up to five million keystrokes.