A device connector is to be connected to a device and includes male terminals to be connected to female terminals in the device, Shield cables are pulled out in a direction different from a connecting direction to the female terminals. Said engaging concavity includes a central portion and a plurality of radial recesses disposed around and in communication with the central portion. A liquid crystal layer may be used to provide a variable optic function and in some embodiments, an alignment layer for the liquid crystal layer may be patterned in a hybrid manner. When the overcap is screwed on the head for mounting the assembly, the free end of the axial plate is urged into contact with a first wall of the opening stop and the axial plate whereof the free end is urged by a centrifugal motion, is elastically deformed then, folds down towards the neck in a space between the opening and closure stops, its displacement being thereby restricted. It is recognized that the strength of location-dependent loading effects can be predicted with the aid of the location-dependent structure density and therefore compensated. The reader module is coupled to the buffer and has a first read position which is temporally movable with respect to the write position.