Logitech First Mouse Plus No matter how you connect First Wheel Mouse to your system, installation is a snap. Plug it into the USB port without needing to turn off your system. Or plug it into the PS/2 port on any Windows? system. The Universal Serial Bus (USB) is the most advanced way to connect mice, cameras, and other peripherals to your computer. With USB you can connect several different mice, so everyone who uses the computer is free to work with their favorite mouse. Logitech's scroll wheel gives you fast, easy scrolling in any application including the web. Just roll the wheel to move up or down on your screen, without having to move the mouse to click in scrollbars. The scroll wheel is also a third button. The contoured Logitech First Wheel Mouse shape provides comfort and easy control whether you use it with your right or left hand. MouseWare software makes it simple to use either the right or left button as your main click button. Logitech's WebWheel software puts the web at your fingertips. With a click of the scroll wheel, speed up web browsing, go directly to your favorite sites or just use it to move quickly through documents.