Most cases are built in many pieces: A box, four separate legs, side panels, top and front panels. They (pretty much) universally can separate from one another. And they almost always use a set of clips, whether they be metal or plastic. Reach your fingers inside the edges of the panel and feel for small, sharp edges. You'll need to apply more pressure than you think to get the loose, so be brave about it, but be cautious.
Best of luck.