The Logitech mouse M90: Simple to set up and use. There’s no software to install. And since it’s corded, you can just plug the cable into a USB port and use your new computer mouse right away High-definition optical tracking (1 000 DPI): Enables responsive, smooth cursor control for precise tracking and easy text selection This wired mouse is built by Logitech : The PC mouse experts. It comes with the quality and design we’ve built into more than a billion computer and laptop mice, more than any other manufacturer Upgrade to Logitech M330 Wireless Silent mouse, for increased comfort - scultpted shape and soft rubber grips, silent clicks and wireless freedom Versatile: Compatible with Windows, Mac and other devices System ram type: system_ram_type