Regular computer cases might do the job for what you need. But some of us prefer using unique cases like the DK01. This all black case has individually removable hard drive bays on the side and an adjustable, but removable, keyboard shelf. It has 10 expansion slots and can accept 6 x 120mm fans. 4 USB 3.0 ports are also available. I don’t know about you but I’d love for my next computer to use a case like this one.