Silverstone RVZ03 is a further evolution of the highly rated RAVEN Z RVZ01-E, a slim form factor case with tremendous capability. It has the same optimized interior that has room for a standard ATX (PS2) power supply and support for some the biggest consumer graphics cards on the market with superb air cooling performance. Designed for use in either vertical or horizontal orientation, it can be placed comfortably in any space-constrained environment that requires a powerful PC. Specifications Material: Reinforced plastic outer shell, steel body Motherboard: Mini-DTX, Mini-ITX Drive bays: Internal: 2.5” x 3 Cooling system: Top: 1 x 120mm fan, 1500rpm, 18dBA Bottom: 1 x 120mm fan, 1500rpm, 18dBA 1 x 120mm empty fan slot Expansion slots: 2 Front I/O port: USB3.0 x 2 Audio x 1 MIC x 1 Power supply: Optional PS2(ATX) Expansion card: Compatible up to 13" (330mm) long, width restriction-5.88" (149mm) Limitation of CPU cooler: 83mm Limitation of PSU: 150mm* Net weight: 4.05 kg Dimension: 382mm (W) x 105mm (H) x 364mm (D) 14.6 Liters 15.04" (W) x 4.13" (H) x 14.33" (D), 14.6 Liters * Maximum length for power supply is 150mm but we recommend 140mm deep power supply due to varying connector locations and the unique structure of RVZ03. Due to the use of internal power cord extension, we recommend not to exceed 800W when powering off a 110V outlet (no limit for 220V).