USB To HDMI Adapter (with Audio) can convert USB2.0 interface to HDMI interface, and allows you to add extra display (up to 6 displays for pc or 4 for Mac) through your USB2.0 Port. Extend your desktop across 2 or more (limited 6) displays allowing you to increase your window frame like never before or Expand spread sheets across 2 or more (limited 6) display, in graphics programs increase your working area by putting al your pallets on the second display. Mirror model can make all the assistant displays show the same window frame as main display synchronously.