A power supply apparatus and related method. In addition, the offshore system includes a topside mounted to the hull and positioned above the surface of the water. By subjecting the guide tube to a vacuum and applying a compressed gas stream to the end of the outer support tube, the soft-elastic fiber strand is held straight in a manner which is optimal for the cutting process. The interface connector is compatible with a first interface standard. Next, the highest bit of the hash value is removed and the remained bits are used as the lower address portion of the hash address.