Replace or upgrade your computers power supply with the EW3905 Professional 600W Power Supply 600W. The EW3905 is equipped with a silent fan of 14cm and has an extended range of connectors: 4 SATA connectors, 1 PCI-Express connector (6+2 pin), 1 Mother Board connector (20+4 pin), 1 P4 connector (4 pin), 1 FDD connector and 3 Molex connectors. Thanks to the PFC support the EW3905 is using less power, which has a positive effect on your electricity bill. The EW3905 Professional 600W Power Supply with PFC has over voltage protection, under voltage protection, short circuit protection and overload protection.