This is a mini vacuum powered direct from your computer's USB port. Great little gadget for keeping your desk and keyboard clean. 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, slide the switch to the second level to turn on the LED ligh, 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 trapper underneath the keyboard keys, by sliding the squeezable tube between keys. Use the brush and suction tube attachment for general cleaning of air vents (fan). Monitor and computer areas, or dust your desktop. Requires no external power source, plugs straightly into any USB port.