The BannanaPro is a variation of the Raspberry Pi and a great little board that runs a variety of Linux operating systems. They are inexpensive, roughly $45, and carry a ton of processing power. This 3D design is to print out a case that fastens with 4 small screws. You should be able to download the STL files and modify them, such as adding custom air vents on top or on the side. The challenge with most of the cases out there is getting the printing down to two pieces. More information on the Banana Pro here: http://www.lemaker.org/product-bananapro-index.html