The DAM for Sitecore module has a package for each of the supported Sitecore version.
Sitecore 10.x
Patch for Sitecore 10.4
If you are installing the DFS connector on a Sitecore 10.4 instanse, then you need to apply this patch. The patch must be installed after installing the main package. DAM for Sitecore-10.4 - Patch for SC 10.4.zip
2.2 Installation
If you are installing the module on a Sitecore instance that does not have a previous version of DFS, then continue with this this guide: DFS 10.4.0 - Installing DFS the first time.
If you already has a previous version of DFS installed on you Sitecore instance, then continoue with this guide: DFS 10.4.0 - Upgrade