This article describes a USB to VGA video adapter that has been tested and proven to work with Elo products.

Question: “I need to install 2 touchmonitors on one computer but I only have one VGA output and no way to add an extra VGA card. Can you recommend a good USB to VGA adapter that will allow me to do this?”

Answer: The StarTech USB2VGAE2 has been tested and proven to work very well for dual touchmonitor video configurations.