I re-installed one of my favorite motherboards, an AOpen "MX34" into a new case and noticed that there is a component completely fried/cooked/vaporized! I attached an image. I am curious what may have caused this, the board continues to operate without any issues as far as I know.

Edit:
After doing some research I found that the "L" designator identifies the fried component as an inductor. In my case it "was" a ferrite block type inductor based on the shape of the fried remains. I have read that some simply just use a bridge for repair? In my case, as a wrote, so far it has not caused any noticeable failures during gaming usage. Its just weird, I have no clue what caused this to destruct?