Product Description Key characteristics: 1.Simply connect the Vacuum to the USB port of the laptop or computer.It require no external power source, plug straight into any USB port 2.Two Vacuum cleaning attachments included:Bristle brush and flexible rubber 3.Two switch levels:Slide the witch to the first level to turn on the LED light;Slide to the second level to turn on the vacuum cleaner 4.Press the "High Power" button to increase suction power for vacuuming heavier dirt and dust 5.Use the keyboard attachment rubber to vacuum the dust and other particles trapped underneath the keyboard keys, by sliding the squeezable tube between keys