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 keyboard tool attachment. Instructions: 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 vacuum cleaner. Press the 'High power' button to increase suction power, for vacuuming heavier dirt and dust. 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(Fan) Monitor and computer areas, or dust on your desktop. Requires no external power source, plugs straight into any USB port. Color: As shown Specifications: Voltage: 5V.,current:500mA. Package included : 1 x MINI USB Vacuum Keyboard Cleaner 2 x Cleaning Attachments