Sun Microsystems has long been synonymous with leading edge technology. Now, after years of telling the world "The Network is the Computer", Sun is poised to become the leader in the emerging network-driven economy. Forward thinking organizations are looking to Sun to lead them into the dot com future. And Sun takes its leadership commitment seriously.This product is Sun StorEdge L8500 2N Redundant Three Phase SUVA Power Supply. Supplies 220 VAC power to redundant 220 VAC load sharing power supplies for the tape drives, robots, or front frame components. Required when purchasing the 2nd and 4th optional 19" racks (SG-XL8500-2RAC and SG-XL8500-4RAC). Installation is included but Customer will need to ensure proper electrical supply is available to the L8500 base unit. RoHS-5.