This power supply option contains two hot-swap 2000W, 200-240V power supplies to provide both power and redundancy to your IBM BladeCenter. Two 2.8m (nine foot) IEC C19 to C20 rack cables are included for attachment to a supported 200-240V power distribution unit. BladeCenter supports four power modules. Two 2000W hot-swap, redundant power modules are standard and support the population of BladeCenter bays 1 through 6. This 2000W Power Supply Module is required to support installation of blade servers in BladeCenter bays 7 through 14. BladeCenter customers must use power supplies of identical wattages to ensure power redundancy and should not mix power supplies of different wattages.