The files were released so users can view and make alterations to the controller’s design.

Pierre-Loup A. Griffais, a developer at Valve, detailed the project on the Steam Community page, saying:

To spur on the process of sharing alternate designs, Valve has also released variations of the battery door, allowing the controller’s wireless USB receiver to fit into a compartment in the controller.

The move has drawn a warm response from the Steam Community, however at the time of this writing, all links to the ZIP archives, hosted on Dropbox, have been temporarily disabled, with Dropbox stating the account’s links are generating too much traffic. It is unknown if the archives will be re-enabled, or if they’ll be hosted somewhere else.

Visit the Steam Community for more information.