Systems, methods and apparatus for identifying, tracking and monitoring digital media files through the use of missing masters lists is provided. A service provided by the remote device is discovered, and a description pertaining to the service is retrieved by the host computer. Other aspects and embodiments are provided herein. The apparatus may further provide a rotating portion and locking portion, mounting brackets for direct connection to a mounting surface, grounding teeth, and a twist-lock engagement means for interlocking and aligning PV modules in the array.