D-Link 500W Redundant AC Power Supply

This power supply is designed to conform to the wattage requirements of the Ethernet switch. The power supply provides a low-cost, simple solution to the problem of an inadvertent failure of the internal power-supply of the Ethernet switch, which can result in the shutdown of that switching device, the PoE devices attached to its ports, or an entire network. Supporting 500 watts output power, this power supply can maximize power availability of the switching device.