Dell MS3220 USB 2.0 3200DPI Ambidextrous Wired Laser Mouse - Titan GreyThe 3200 DPI sensitivity lets you navigate smoothly and easily across high quality screens and is designed to work on most surfaces. A mechanical scroll wheel for quick and efficient scrolling. Two programmable shortcut buttons let you easily move back and forth quickly through the web pages or you can map these buttons to your preferred commands or applications. Its symmetrical design makes it great for both left and right handed users. This allows