USB port mini vacuum·Two vacuum cleaning attachment included one brush and one flexible rubber. Use the keyboard attachment rubber to vacuum the dust and other particals underneath the keyboard keys·Use the attachments for general cleaning of monitor, air fans, computer area·Simple connect the vacuum to the USB port, No external power supply is required·Two switch levels: slide to the first level to turn on the LED light; slide to the second level to turn on the vacuum cleaner·Clean the dust of your computer, laptop, very practical item