In a sliding contact guide for a drive chain or other flexible transmission device, a guide body includes a shoe 102 and a slotted, plate-receiving portion 102 integrally molded on the back of the shoe. The transverse beam structure exhibits two transverse bumper carriers with a first transverse bumper carrier above the crash boxes, and a second transverse bumper carrier below the crash boxes. Control of a lateral component of later removal of the OPL plug by etching also can increase tolerance of overlay error in forming connections and thus avoid loss in manufacturing yield. A memory coupled to the processor, and includes a reconfiguration module configured to store the input functions assigned to the first and second input members and, upon execution of the processor, to reconfigure the input functions assigned to the input members when the first input member is inoperable.