Magnolia 4.5 reached end of life on June 30, 2016. This branch is no longer supported, see End-of-life policy.
The DMS module provides one component:
dms. It allows the editor to select a folder or single document in the document management system or define a custom query. The component displays download links for the target documents.
Functionally the component is very similar to the Download link component in STK.