I've got this driver from the hidden Micro Innovations' website : http://126.96.36.199/driver/xxxx.exe (you have to know the exact model and then the .exe extension to get the driver needed. ie. http://188.8.131.52/driver/USB610A.exe will get the driver for the USB to serial adaptor driver from them. It's really stupid that they do it and it's almost impossible to talk to their techs.. Hope this helps. Support@pcnu.com
The following files are found inside the driver download file.