Lepatek B550-SA 550W ATX12V Power Supply: * 80 PLUS Bronze certified to deliver up to 88 percent efficiency * High efficiency 5Vsb circuit * 12cm fan with thermal programmed speed controller * Active PFC universal switching circuit * Over Power, Over Voltage, Over Current, Short-circuit and Brown Out protection * 8P PCI-E connector * Powerful single +12V design * 60cm CPU connector cable facilitates installation with bottom-mounted PSU chassis * SATA power connectors with 3.3V rail supports new generation SSDs