Notes about the PREFPANE file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The PREFPANE file type is primarily associated with 'Macintosh OS X' by Apple Inc.. A Preference Pane is a special dynamically loaded plug-in in Mac OS X. Introduced in Mac OS 10.0, the purpose of a Preference Pane is to allow the user to set preferences for a specific application or the system by means of a graphical user interface.