Flat notebook mouse with 2.40 GHz technology from Logi Link with optical sensor & up to 1600 dpi scanning for high precision & fast operation. The connection is made via the USB (Universal Serial Bus) micro dongle supplied & the mouse is detected automatically by autolink function. Resolution can be changed easily with the DPI button. In addition to optical scanning & vertical scrolling wheel, the Logi Link notebook mouse has 3 programmable buttons.