The present disclosure relates to a silicon-on-insulator substrate having a trap-rich layer, with crystal defects, which is disposed within a handle wafer, and an associated method of formation. In one aspect, the EMS device includes a substrate, a stationary electrode over the substrate, and a movable electrode over the stationary electrode. This allows, for example, local relational database systems to transparently access information from a central LDAP directory. When receiving an unmount instruction from the first host PC, the controller OS unmounts the memory, disconnects the connection with the first host PC, and starts communication with the second host PC. When the spring holds the knob away from the cylindrical member, the rod is in a retracted position in which the end of the rod opposite the knob is inside the cylindrical member.