APC 8900 Series 230V PDU 63A Switched Rack APF8956 With 6X C13S. NEW, NO ORIGINAL PACKAGING – UNIT HAS A FEW MARKS DUE TO STORAGE/WAREHOUSE. A power distribution unit (PDU) is a piece of networking equipment designed to distribute power to devices, generally placed within a server cabinet. Most PUD’s have multiple ports and can supply a steady flow of power to several devices at once. Most PDU’s are designed to prevent power surges and overloaded circuits. PDU’s can be used to handle the power supply of multiple server cabinets at the same time. In some cases a network administrator can manage a power distribution unit remotely. Power can even be recycled, improving performance and efficiency.