The DPS-700 redundant power supply (RPS) is designed to conform to the wattage requirements of D-Link's Ethernet and Gigabit switches. It is external RPS units enclosed in solid metal cases with sockets to AC or DC power sources on one end, and connect to a switch's internal power supply on the other end. It provides a low-cost, simple solution to the problem of an inadvertent failure of the internal power-supply of an Ethernet switch, which can result in the shutdown of that switch, the devices attached to its ports, or an entire network. Supporting full output power for the switch, these redundant power supplies can maximize the power availability of the switching device.