The ScreenBeam USB transmitter is an add-on companion to the ScreenBeam Pro wireless display receiver. It enables wireless display on the huge installed base of Windows 7/8 laptops without wireless display. Now almost any Windows-based laptop can mirror/ extend whatever is on its screen to HD projectors and HDTVs. Users can share video, pictures, presentations, programs or apps. With ScreenBeam you are never restricted to specific services, sites or browsers.