A ratchet tensioner is disclosed for a chain enclosed within a casing that does not have a removable cover. The linking interconnects extend from the first surface of the wiring board to the side surfaces and upper surface of the encapsulant, and moreover, electrically connect with wiring of the wiring board that projects from the encapsulant. Both loosely-coupled and tightly-coupled configurations, each with its cooperative processing model, are disclosed. From this information, the automatic detection device and method determines the user name and the server name for the server hosting the electronic mail account. The X-axis coincides with the longitudinal axis of the main body and the Y-axis and the Z-axis being orthogonal to each other in a first plane perpendicular to the X-axis.