The only way to know is to install the Connect software and try it with one of the books here and see if it works.
But even if you cannot get Connect formatted books, you can purchase LIT format books (as long as you are on Windows) and use CLIT 1.8 to break the DRM and then Book Designer or html2lrf to convert to LRF format for your Librie. That will work for purchasing English books.
Jon
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