The Biostar motherboard is a standard ATX size board. Just about any mid-tower or full tower case can accomodate the board.
There is something else you might want to consider. What else are you going to install inside the case? Is there sufficient room for all the parts to fit while still providing good ventilation and air flow.
As an example consider video cards. They come in a variety of configurations and sizes. Some of the newer cards are 10.5 inches long. Are you going to fill the lower part of the front drive cage with hard drives? Is there enough room from front to back to accomodate a large video card and hard drives?
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