Alternative model: SED of the X-ray emission of NGC 4190 ULX-1 on a logarithmic scale for a different, less conservative, set of parameters. Here we fixed the BH mass to 5 M_⊙, the viscosity parameter to 0.1, and the content of relativistic particles to 0.25. We also show for comparison the application of our model assuming an accretion rate of 1 Ṁ_Edd (dashed lines) and of 15 Ṁ_Edd (dash-dotted lines).