Download the drivers from Maxim here.
Follow the instructions and requirements listed on Maxim’s website. If installation is successful iButton 2 Excel will indicate that it is ready using this icon at the bottom right of the main screen:
iButton 2 Excel
Download the installer here and install on a Windows PC (7, 8, and 10). Run the installer and follow its instructions. Once installation is complete run the program using the icon from the start menu.