Apparatus, and an associated method, for providing routing information to a mobile node operable in a radio communication system. The backlight module includes a replaceable lamp module, a light-guiding plate, a frame and a positioning and protecting mechanism. According to the invention, the extraction hood andor the ventilation device can be adjusted for implementing different extraction intensities in at least two operating modes. The switch is further configured to support at least one of a Virtual Local Area Network, a Quality of Service, a Remote Monitoring, and a Spanning Tree, and the switch is configured to be upgradeable using a plug in device. A projecting portion made of a material out of which the member is made and a material out of which the covering portions are made is formed on a part of a side surface of the member, and the covering portion of the first surface and the covering portion of the second surface are connected to each other through the projecting portion.