The Compression straps I have figured out. But there are 4 buckles on the side of the pack that goes against your back. Two, one on each side just below where the shoulder straps are sewn on (the top), and the other two, one on each side just above where the lower part of the shoulder straps are sewn to the pack. Plus there are either two or 3 buckles on the very bottom of the pack.

As I said, all the buckles that do not have anything to attach to are the male portion of the buckle.