Aluminum ATX Full TowerUSB2.0 x 4 , IEEE1394 x 1 , Audio x 1 , MIC x 1 Front Ports7 External 5.25" Drive Bays6 Internal 3.5" Drive BaysThis case is an engineering marvel. The seven external optical bays are a good start., and the six internal hard drive bays are impressive. Handling SSI motherboards, extended, micro, and standard ATX motherboards is extraordinary versatility. All of this only touches the surface of why this case is so exquisite.It's what the eye won't catch on a first glance. Solid construction sets it leagues above the competition. The uni-body aluminum outer frame measures at least 4mm thick, and can be as thick as 8mm. The frame isn't its only strength. The body itself is 2mm thick all through, making this stable and imposing platform. Keeping it cool is already easy, thanks to all the aluminum, but that doesn't mean it skimps on the fan power, not that you'll ever hear them.The two 92mm rear intake fans spin at a blistering 2100rpm's, yet stay at a quiet 23dBA. The two top exhaust fans and two side intake fans are even more impressive. Measuring 120mm, they are a hurricane of energy with 1200rpm's, but won't scare the neighbors at the whispering 21dBA's. This is a sleek, stable and versatile case that'll easily handle whatever you throw into it.