High Speed Mini Vacuum Cleaner For Notebook & PC USB Port Simply connect the vacuum to the USB port of your laptop or computer Two vacuum cleaning attachments included one bristle brush attachment and one flexible rubber, computer keyboard tool attachment. Two switch levels-slide the switch to the first level to turn on the LED light, Press the "High Power" button to increase suction power, for vacuuming heavier dirt and dust Use the keyboard attachment rubber to vacuum the dust trapped underneath the keyboard keys slide the squeezable tube between keys. Slide the switch to the second level to turn on the light, slide the switch to the second level to turn on the vacuum cleaner