Dell - 550 Watt Hot-plug Redundant Power Supply Unit for PowerEdge 1850 Server. P/N: W5624 Product: 550W Redundant Power Supply Unit. Part Number: W5624 / 0W5624 Input: 100-240V~ / 8A / Autoranging 47-63 Hz || Output: 550 Watt (Max.) Compatibility: PowerEdge 1850