Designed for Comfort Our design experience and expertise are reflected in the HP 128 Laser Wired Mouse. This mouse includes perfectly positioned left and right buttons and a scroll wheel so you can work in comfort all day. You can even adjust the dot per inch speed of the cursor. Easy Cleaning Use your mouse every day and it will accumulate dirt and grime. Over time, this can affect how it performs. Because it was specifically designed to withstand everyday cleaning with disinfecting wipes, this is one mouse that s a snap to keep clean. Plug and Play Connectivity Connecting some peripheral devices can be a complex and time consuming task. Who needs that? With easy plug and play USB connectivity, you can get your laser wired mouse connected quickly so you can get on with your work day. Responsibly Made You should feel good about the products you buy and use. Rest assured, this laser wired mouse is responsibly made with printed circuit boards that are low halogen.