The following is what I have learned by reading the forums for the last few years, I have never owned a Hoot nor do I want to:
Hoot makes 2 different boxes. A gear drive that looks like what andrewflores17 described and a chain drive that looks like the one in the photo you shared with us.
Both are notoriously unreliable and poorly made. If Hoot used a better quality aluminum alloy and better engineered reinforcing in the castings they might actually be reliable.
DAX sells one that looks like a Hoot but instead of having a single row chain inside it. it has a double row chain. I have read in this forum that the one DAX sells is better quality.
I do not know if it is a a Hoot box (modified?) or not though.