Not that I would wish to admit being a Windows user but I started Arduino then connected and powered the Mendel90 afterwards and Windows prompted to search for a driver. It did this then downloaded and installed the driver automatically.
Regards,
Neil Darlow
I try to write with consideration for all nationalities. Please let me know if something is unclear.
Printing with Mendel90 from fedora 25 using Cura, FreeCAD, MeshLab, OpenSCAD, Skeinforge and Slic3r tools.