With less heat converted by the remaining power, HELIOS E1-500 delivers up to 80% energy efficiency. Accordingly, it won’t waste power and trigger excess heat. The less heat output generated, the less noise arises. Coming in hot with its additional connectors and extra-elongated power cables, the HELIOS E1 - 500 is capable of acclimating itself into PC cases of various sizes without breaking a sweat! The HELIOS E1-500 retains up to 80%+ of its energy conversion efficiency to significantly reduce unnecessary clamor while providing a sensible budget that offers the luxury that one deserves. With its built-in auto-optimization fan speed-to-temperature cooling mechanism, an enjoyable recreational and working environment can be effortlessly achieved! Specifications: Key Features Continuous Power 500W Efficiency (Approx.) Meeting up to 80% efficiency Input Voltage 100-130 V/ 200-240 V Frequency Range 47-63 Hz Current 3.5 A-7.5 A Output Modular Type Non-Moduler Total Power 500 Watt Connector Main Power 1 (20+4 Pin) CPU 1 (4+4 Pin) PCI-E 2 (6+2 Pin) SATA 5 (5 Pin) Molex 2 (4 pin) Floppy 1 (4 Pin) Warranty Information Manufacturing Warranty 3 years warranty  ..