This package provides the Dell Digital Delivery Application and is supported on Alienware, Inspiron, Latitude, OptiPlex, XPS, Precision, Vostro, and Dell Venue running the following Windows operating system: 10 RS4 and above. This package is only for systems running Windows OS versions 17134 and above. To find the version of your operating system, tap the Windows key, type "winver" in the Start menu and press Enter. If you have an OS version below 17134, you will need to download and install the Windows 7 version (3.5). On the "Drivers and Downloads" window, under "Operating System:" choose "Windows 7, 64 bit". You should then be able to download the correct version 3.5.