The Kontakt (KLI) version of your product is not a serialized Kontakt library, and will not have an ‘Add Library’ function, nor a serial, nor will it 'mount' in your Kontakt libraries panel. Instead, these Kontakt patches can be loaded either through the 'Files' panel in Kontakt, or with a drag-and-drop function straight into your Kontakt interface from your hard drive.  Also, you can add the entire folder of loops to Kontakt's Quickload if you wish!

The files for your library can be stored anywhere you wish (i.e. external HD)

As far as registration, this product does not require serial authorization, but does require a licensed, paid version of Kontakt.