A commercial display shows the Windows desktop perfectly. The installer opens the application, steps back, and invites a colleague to try it. The first tap does nothing. That scene can lead a team to suspect the glass before it has checked the complete connection. In a supported external-PC configuration, the picture and the touch input travel through different paths. One can work while the other is missing. This guide is part of MWE's brand communications. It was prepared with AI assistance and checked against the official product and support sources linked below. Follow the picture, then follow the tap The first path runs from the computer to the display. It carries the picture into the selected video input. In the configuration described by MWE's Help Center, that connection is HDMI. The second path runs back from the display to the computer. It carries the input that tells Windows where the user touched. On the supported models described in that guidance, the connectio...