DESC: 3.06 GHz chassis with Intel certifed P4 power supply for system stability and configuration. Total 7-bays for expansion. Tool-free 5.25 drive cage, 3.5 drive cage, snap-on front bezel for quick and easy installation .Interchangeable M/B stakes for fast installation on different M/B size .Dual front side USB 2.0 and cable included .Perfect EMI construction for high speed CPUs. 8cm rear fan pre-installed and optional front fan for better ventilation .Optional key lock at the back of chassis for security .Meet CE and FCC requirements .TAC solution available Prescott air guide with SATA power supply get versatility with 80mm or 90mm fan mounting options dual component cooling (DCC) for both CPU VGA (PCI Express) SATA power supply .