Use the brush and suction tube for general cleaning of air fans, monitor and computer area, or dust on your desk. Included 2 vacuum cleaning attachments - one bristle brush and another flexible rubber. Use the keyboard attachment rubber to vacuum the dust and other particles trapped underneath the keyboard keys, by sliding the squeezable tube between keys. Simple connect the Vacuum to the USB port of your laptop or PC computer. No battery required, just plug directly into any USB port.