This is something I did because I could not find one. The fan on the POE+ hat does not work with the Banana pi so I added a 40mm 5V fan to aid in cooling.
Fan and case is held with snap fittings, no screws required.
I did not expose any of the IO ports apart from RJ45 and USB, as I did not need access to them.
The author hasn't provided the model origin yet.