What are ACSM files?
Adobe Digital Editions (ADE) uses ACSM files to download DRM-protected ebooks. An ACSM file acts as download instructions between ADE and the ebook itself.
After downloading the ACSM file for a borrowed book, follow the prompts to open it with ADE. You can also set ADE to open ACSM files automatically.

- How to choose a reading format for a borrowed ebook
- How to download OverDrive ebooks on your Pocketbook ereader
- How to download OverDrive ebooks on your Tolino ereader
- How to download supplementary content
- How to export your history from your library's OverDrive website
- Where are library ebook files saved after I download them to my computer?