Sun StorEdge L8500 2N Redundant Single Phase Power Supply. Supplies 220 VAC power to redundant 220VAC load sharing power supplies for tape drives, robots, or front frame components. Required when purchasing the 2nd & 4th optional 19" racks (SG-XL8500-2RAC & SG-XL8500-4RAC). Note: Installation is included but Customer will need to ensure proper electrical supply is available to the L8500 base unit. RoHS-5.