This article provides some tips for Silent Driver installation

Both Elo touch drivers (single-touch and multi-touch) unzip to a very long path with complex names, which can make silent installation very cumbersome since it must be done from a command prompt.  To make silent installation manageable, unzip to an easily accessed folder with a short name, and make the unzipped folder name short and simple.   

When you double-click the driver, the default unzip-to path is highlighted, so all you have to do is type in a simple path such as c:\elo, followed by ENTER (you have to click one OK box to get to that point with the multi-touch driver).  After the files unzip, click OK, then terminate the installation by clicking No to the license agreement. Open file explorer, go to the c:\elo folder and rename the driver folder to something simple such as stdvr or mtdvr.  Now get to a command prompt and you can easily change to the simple directory and subdirectory.  See the user manual in the \common folder for silent install options.