Motherboard Supported: Mini ITX, ATX, Micro ATXNumber of Fans Supported: 6Number of Fans Installed: 3Installed Fan Size: 4.72"Number of External 5.25" Bays: 3Number of Internal 3.5" Bays: 4Number of Internal 2.5" Bays: 4Number of Total Expansion Bays: 11Number of Total Expansion Slots: 7Total Number of USB Ports: 2Power Supply Installed: NoNumber of Power Supplies Supported: 1Number of Power Supplies Installed: 0Color: BlackMaterial: Steel, PlasticForm Factor: Mid-towerHeight: 19.9"Width: 8.3"Depth: 17.3"Weight (Approximate): 13.34 lbPackage Contents: Graphite Series 230T Compact Mid Tower Case-Black,Quick Start Guide,Accessories box with Screws, Zip Ties, and other Mounting Hardware,Limited Warranty: 2 YearFast and straightforward system building, by design.At Corsair, we believe that no matter your budget, building your own PC should be easy, and have great looking results. Choose the Graphite Series 230T, and the only time you'll need a screwdriver is for attaching the motherboard. Your own custom-built PC will have a look that's aggressive, yet refined, with up-front USB 3.0 and headset connectors for quick access. Add to that dual front intake LED fans for great cooling potential. Whether you're building a gaming PC or just a replacement for a boring office-grade box, you can enjoy the unique pride of ownership that comes from a great-looking system that you've built yourself.