A rear open end of each cavity is formed on a contact surface of a rubber plug accommodation part disposed rearward from the connector housing. The equipment includes an upper coupling part in the form of a connector spool piece having at least one circumferential ring groove for use in making engagement with the lifting tool. A partition wall between display devices may be configured to reduce the distance between the combined display devices. Normal exception processing by the data processor can be resumed after debugging, or exception processing by the data processor can be aborted to allow the normal execution of instructions by the data processor to resume.