EMU unfortunately does not support the Open DMX USB. Please upgrade to one of the supported interfaces:
- DMX USB Pro https://www.enttec.com/product/dmx-usb-interfaces/dmx-usb-pro-professional-1u-usb-to-dmx512-converter/
- ODE Mk3 https://www.enttec.com/product/dmx-distribution/ode-mk3-dmx-ethernet-converter/
If you wish to use the Open DMX USB you can use QLC+ https://www.qlcplus.org/