To enable electronic equipment to be exposed by moving part of the faceboard of a desk or of a frame, or the like.

A movable faceboard 14 is provided by cutting of a part of a fixed faceboard 13, and a mounting surface 15 for electronic equipment and the like is provided on the back of the movable faceboard 14. The movable faceboard 14 is movable via a pair of guides 16 provided on the back. Each of the guides 16 comprises a guide plate 41 with a slit 46 therein and a guide block having a slit guide hole which moves along the slit. A first roller pin secured to the movable faceboard 14 is engaged in the slit 46, and a second roller pin is passed through the slit 46 and engaged in the slit guide hole. The guide block can be moved toward the back of the fixed faceboard 13 as the movable faceboard 14 is dropped, making it possible to expose electronic equipment on the mounting surface 15.