This USB mini vacuum cleaner is powered directly from any USB port and specifically for notebook or PC. The notebook PC vacuum cleaner just directly plug into the USB port of your laptop or PC and then you can start to clean your computer keypad. Two switch levels- slide the switch to the first level to turn on the LED light, slide the switch to the second level to turn on the LED light, slide the switch to the second level to turn on the vacuum cleaner.Use the keyboard attachment rubber to vacuum the dust and other particles trapped underneath the keyboard keys, by sliding the squeezable tube between keys.Use the brush & suction tube attachment for general cleaning of air vents. Monitor and computer areas, or dust your desktop. Requires no external power source, plugs straight into any USB port.