Optical technology: LED lights scan the surface beneath the mouse to detect movement with a fair amount of accuracy, suitable for everyday computing and browsing. Logitech Advanced 2.4 GHz wireless connection: Wirelessly connects to the included Unifying nano-receiver, which plugs in to your computer’s USB port and works across an array of Unifying-compatible wireless devices. 3 buttons: Provide access to frequently used commands and functions for powerful control. Scroll wheel: Enables smooth, fast movement. Maximum of 1000 dpi: Lets you find the perfect sensitivity. Compatible with most Chromebook, Windows and Mac computers: Works across a wide array of computers.