Another thing, most products have multiple installers, so the downloads will have an extension or prefix such as ‘dpc’ or ‘ds’; like these:
Older content may only add a ‘ps’ or ‘ds’ extension on the end of the file name, like these:
Or, if there’s only one installer, may only have the ‘dpc’, or may not have any extensions (mostly on older products). These are poser products, but may also contain DAZ Studio files as well.
dpc and ps both represent poser files, while ds obviously means DAZ Studio files.
Finally, files that work with Genesis will have a ‘trx’ extension at the end of the file name.
Make sure to check the file names when you download a product installer to know what files are contained in it.