The only thing that it reminds me of is some fans I used once that had a rubber and plastic center and we would push a plastic pin like that through to lock the fan in place instead of using screws.
The other thing I can think of is possibly a part of the case that was never put on properly.
The only thing that it reminds me of is some fans I used once that had a rubber and plastic center and we would push a plastic pin like that through to lock the fan in place instead of using screws.
The other thing I can think of is possibly a part of the case that was never put on properly.