... big vacuum strength8. Handy desk vacuum cleaner with USB connection9. USB Cleaner for computer keyboard, screen, mouse10. 2-speed control11. welcome ... & brush for different uses;8. Ideal for cleaning computer, keyboard, mouse, stationery & other office appliances;9. Two switch levels-slide ... brush edge. In the dust absorption keyboard, it will be connected to the USB interface, the switch can work. And ...