OMG! I get to actually answer a question for Prince Princo Pepst! This is truly an honor, your highness! :flower:
Anyway, this isn't always easy to do, because enclosure ports don't necessarily identify themselves in a plain english fashion, but often rather with a code which refers to a manufacturer, model, or firmware revision. It's also easier to do on a Mac than it is in Windows, because OS X's system profiler seems to do a better job of reporting that kind of info than Windows hardware control panel.
I might be able to help if you can tell me exactly which brand and model of enclosure you have. A picture would be good, too.
Try one of the system information reporting tools on Windows, and see if they help identify it (if you can post here the info they give you about your USB ports and/or other USB-related info, I might be able to tell you what you have):