Product Name Nebula Dimension (L) 260x (H) 330x (W) 260mm Drive Bay 3.5" Internal x 2 (tool-free retainers) or 2.5” Internal x 2 Expansion Slot 2 slots Motherboard Support Mini-ITX Power Supply Standard P/S2(ATX) or EPS Cooling System Rear fan: Preinstalled one 1200 RPM 120mm silent Xigmatek XOF black bladed fan I/O Panel USB 3.0 x 2 and HD Audio in/out jacks Max Graphic card Length 200mm Max CPU Cooler Hight 80mm