1)imply connect the Vacuum to the USB port of your laptop or Computer 2)two Vacuum cleaning attachments included-one bristle brush attachment and one flexible rubber, computer keyboard tool attachment. 3)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. 4)Press the“High Power” button it increase suction power, for vacuuming heavier dirt and dust. 5)Use the brush &suction tube attachment for general cleaning of air vents, monitor and computer areas, or dust on your desktop. 6)Requires no external power source, plugs straight into any USB port 7)Standard rotation speed 6500rpm spec: Size: 15*4.5*4cm USB line length: 1500mm Work of length: 1300mm Package： QTY/CTN:90PCS G.W: 11KGS N.W: 10KGS MEAS.:43.5*45*42.5CM