My company uses Winterm S10’s, and we have a custom application that uses ELO touchscreens, a barcode scanner, and a “serial to USB keyboard” converter.
Everything but the “Serial to USB keyboard” converter is okay.
What we’ve found is that 5.1.028f, 5.3.0_09f, and 5.1.0_47f all do not recognize it. However, 5.1.010f works fine with the converter. (I was briefly able to get 5.1.0_47f to recognize the converter as a hub, but it did not recognize the HID device on it.)