The JUA190 USB 2.0 Display Adapter acts as an external graphics adapter for your PC. It allows you to add an additional VGA monitor/display through your USB 2.0 port. Hot-swappable USB enables you to add or remove monitors without rebooting your systemMove and view your large spreadsheets across two screens without overlapping windowsGreat for multitasking in a wide variety of fields including: Phone centers Stock Markets Hospitals Graphic Design Editing Accounting Etc. The adapter supports three viewing modes. With plug-and-play functionality between your computer and a second? monitor or projector you will be able to create a new visual environment in seconds.