Genuine Dell 280w Power Supply For the Optiplex 330, 360, 740, 745, 755 Desktop System.Connectors: 1x 24-Pin Standard ATX Power Connector, 1x 4-Pin ATX Power Connector, 2x SATA Power Connectors, 1x Floppy Drive Power Connector.All units are pulled from new, unused systems, and guaranteed to perform perfectly for 30 days. Even though these are new units, there may be cosmetic indication of prior system installation, there may be evidence of handling, or there may other cosmetic imperfections present. This is not a factory-sealed item but a new item recovered from unused returns or end of life inventory.