A Ni-plated steel sheet is provided in which the occurrence of scratches at the time of forming a battery can is suppressed. The systems and methods of the invention support backwards compatibility, which allows older versions of the same software to be accessed concurrently with newer versions. The assembly is further designed to enable the individual component modules to be powder coated prior to installation so that the pre-fabricated modular boat dock will be rust resistant and have a much longer expected lifespan than a custom boat dock which is built on site would have. The mass storage device preferably includes a receiving zone adapted to receive a retractable tooth located on the lock member.