According to one embodiment, a method comprises detecting loss of lockstep for a processor in a multi-processor system. The basic code string is synthesized with the additional code string by a code-string synthesizer to be outputted as an output code string. The insulating housing is formed with a pair of mating portions in which the contacts are received, The mating portions extend from the base along the card ejecting direction to expose into the card receiving space at a position of upper and lower sides. The server may then set the preferred medium order in the WCD.