Hello. My name is Michael. I can help you with your question.
This thing is a monster. It even looks intimidating.
On one side there is a hinge - there are metal clips on the top. Undo that.
Then, on the side opposite the hinge is a button you have to push up to open the side and finish opening it like a clam shell.
Let me know if that helps, or if you still need help getting there.