Product UPC: 700814127787 The Dell power supplies utilize output Oring FETs to isolate the power supply from the 12V system bus. If a single power supply fails its output Oring FET for that power supply will turn off removing itself from the bus. Think of it as an electrical switch that turns off when the power supply fails.
30 Day Warranty Included. Extended warranty is available. Contact your sales rep for more information.