Verbatim's Optical Desktop Mouse features high definition optical technology, allowing for smoother cursor control & better on-screen precision. With 1000dpi resolution, Verbatim's Optical Desktop Mouse is 2.5 times more accurate than a standard optical mouse. The smooth contoured design of the mouse offers maximum comfort & control for use in both the left or right h&. Simply plug into an available USB (Universal Serial Bus) port for plug 'n' play usability. Verbatim's Optical Desktop Mouse also features 5 programmable buttons*, allowing you to assign one of 48 useful functions to the buttons on the mouse.