Do your part for the environment with EarthWatts power supplies. The earth is our most valuable resources and protecting and preserving it for future generations is of utmost importance. EarthWatts is available in three highly efficient models -- 380 Watt, 430 Watt, and 500 Watt -- and are all 80 PLUS certified, the newest standard in power supply efficiency. And that means that using EarthWatts will save you money on your electric al bill. Fully equipped with universal input, EarthWatts automatically works on any power grid in the world. And the built-in Active PFC makes EarthWatts the ideal way to reduce electrical waste and protect the environment. 4 SATA connectors PCI-E connector - one for 380W and 430W, two for 500W Saftey approvals - UL, CUL, FF, T?V, CE, CB, C-tick, CCC Universal Input Active Power Factor Correction (PFC) SATA connectors for your Serial ATA drives. PF value up to 99% AQ3 - Antec Quality three-year parts and labor warranty Unit Size - 5.5? (D) x 5.9? (W) x 3.4? (H)