Motherboard Supported: ATX, Micro ATX, Mini ITX, EATXNumber of Fans Supported: 8Number of Fans Installed: 3Installed Fan Size: 5.51"Number of External 5.25" Bays: 2Number of Internal 3.5" Bays: 2Number of Internal 2.5" Bays: 3Number of Total Expansion Bays: 7Number of Total Expansion Slots: 8Total Number of USB Ports: 4Total Number of Audio In Ports: 1Total Number of Audio Out Ports: 1Power Supply Installed: NoNumber of Power Supplies Supported: 1Number of Power Supplies Installed: 0Material: SteelForm Factor: Full-towerHeight: 17.9"Width: 10.2"Depth: 21.1"Weight (Approximate): 22.05 lbPackage Contents: Carbide Series Quiet 600Q Inverse ATX Full-Tower Case, Accessory kit, Warranty and Support Information, Limited Warranty: 2 YearMINIMALIST STYLE. MINIMALIST NOISE. Elegant external design meets precise acoustic engineering, in an unrivaled blend of beauty, power, and quiet. The 600Q is built to keep your PC whisper-quiet, no matter what's running inside. Sound damping material is built into the solid steel front, top and side panels, and the three-speed fan controller lets you pick your optimal noise and cooling performance levels.