Does anyone know the way to get open a My Book Duo?

I accidentally dropped my My Book Duo ( the one with the glossy top and lined lower) and I think the circuit board has moved slightly so one of the connectors for the HD does not line up. I am trying to open it up to re-align it, but I am not sure how the two halves of the enclosure are connected. Think it's clipped, just wondering if anyone had any advice. Many thanks.

Hi All, I have worked it out, it needed a thin flat screwdriver wedged in and twisted to pop it apart, and the clips didn't break either, which is a bonus.