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 N+1 Power Supply for 4 robot arms (HandBots). This part number is required for L8500 but available at no charge. Must also order/ have set of robotic arms (SG-XL8500-4ROB). Installation included. RoHS-5.