Brand mushkin Model 550250 Type ATX12V / EPS12V Maximum Power 580W Fans 1 x 120mm LED Fan PFC Active Main Connector Main Connector +12V Rails 4 PCI-E Connectors 2 x 6Pin NVIDIA SLI Support NVIDIA SLI certified Modular Cabling Support Yes Efficiency Up to 84% Over Voltage Protection +5V trip point < +7V +3.3V trip point < +4.3V +12V trip point < +15.6V Input Voltage 115/ 230 V Input Frequency Range 50/60 Hz Input Current 10A @ 115V, 5A @ 230V Output +3.3V@24A, +5V@24A,+12V1@20A, +12V2@20A, +12V3@20A, +12V4@20A, -12V@0.8A, 5VSB@3.0A MTBF >100,000 Hours Approvals TUV, CE, CB, cUL, FCC Features RailFusion: responds to increased loads by automatically combining 12V rails when required QuadRail: Four +12V rails distribute load evenly for maximum stability Enhanced Power Conditioning ActiveShield Technology