A data managing method for an optical disc drive writing user data into an optical disc having defects. An energy management object is instantiated for each machine, wherein energy utilization is aggregated using such energy management objects. The overload clutch has a coupling element and a replaceable spring element which presses the coupling element against the shaft such that the maximum value for the transmittable torque is dependent on the replaceable spring element. The connector device also includes a coupling piece which connects to the base piece facing outwards and which comprises a socket opening for plugging in the standardized fiber optic plug connector. This movable section includes a movable electrode 6 opposing the base 1 via a first gap, and a mirror 8 being affixed to the movable electrode 6 via a vertical rib 7.