Size:400W The VITAL SERIES OF ATX12V v2.31 high efficiency 80PLUS certified power supply. FSP is designed to optimize stable power performance and value in mind. It features the latest in advancement of circuitry design to maximize efficiency and compatibility. The VITAL Series is available in 400-watt and 500-watt. Each model is featuring the latest support for multi-core AMD/Intel CPU systems, 120mm quiet and long lasting fan, black case coating, meshed output cables, PCI-Express power output support, Serial-ATA support, and energy saver standby mode of 1-watt. FSP Quality Assurance Program, a manufacturer’s direct service guarantees quality and performance for a period of 3-Year, included. All models are qualified for RoHS, Lead-Free, Green Product (G.P) global environmental friendly status.