Thermaltake URBAN S31 Snow Edition White Window ATX Mid Tower Computer Case Case Type: ATX Mid Tower M/B Type: ATX (12.0" x 9.6"), Micro ATX (9.6" x 9.6") Expansion Slots: 7 Front I/O Panel: 2x USB 3.0 Ports, 2x USB 2.0, 1x HD Audio Power Supply: None, Supports Standard PS2 Power Supply Built with brushed aluminum finish front door panel to mask the extrusive drive devices, not only unify the appearance, but also provide a simple yet sophisticate aesthetic The perforated front-top panel has implemented two of latest data transfer SuperSpeed USB 3.0 ports along with two USB 2.0 ports, a HD microphone and headset jacks, to grand direct access when needed The latest tool-less innovation with 5.25" & 3.5" tool-free drive bay design minimized the hassles of installing ODD and HDD devices Top-mounted 2.5" or 3.5"HDD Docking Station enables blazing fast file transfer and effortless hot-swap drive replacement design for easy setup High-end Complete System on the go Advanced Ventilation