At its core, the 'Mime Types Plus' plugin serves as a valuable tool enabling users to manage Mime Types, a crucial element in the functioning of WordPress websites. Essentially, a Mime Type, standing for Multipurpose Internet Mail Extensions, provides information about how to process or interpret a file. It's a two-part identifier for file formats on the internet, with the first part indicating the type of file, such as 'text' or 'image', and the second part detailing the subtype.

Here's where the 'Mime Types Plus' plugin steps in. It expands the capabilities of the WordPress system by not merely reading but also enabling the addition and modification of new Mime Types. While WordPress does possess an in-built system for handling Mime Types, its scope remains limited. The 'Mime Types Plus' plugin enhances this existing functionality, thus ensuring a broader application.

For example, when you need to upload a file type not natively supported by WordPress, you might face issues. The 'Mime Types Plus' plugin beautifully handles this by allowing users to upload those unsupported file types, thus extending the overall usability of the site. Moreover, it facilitates better control over how your files are managed, offering the ability to specify what files are processed as what Mime Type, a feature that can prove to be greatly beneficial for users managing an extensive range of content.

Not just managing, the plugin also allows removal of existing Mime Types, thus preserving the system from potential security risks. Its ability to handle Mime Types effectively and efficiently, ensuring your website runs smoothly and presents files in their intended format, underscore the innate value 'Mime Types Plus' offers to every WordPress user.