Abstract: A supporting member for a portable digital video disk player has a rotatable member and a base for accommodating the rotatable member. The rotatable member includes a rotatable seat, at least one elastic member and at least one fastener pressing the at least one elastic member. Each of the rotatable seat and the at least one elastic member has a through hole. The base has at least one protruding element drilling through the through holes of the rotatable seat and the at least one elastic member. The rotatable seat can rotate relative to the base.

Abstract: A rack-mount structure has a roof mount fitted to the roof, the roof mount includes a slot therein, a suspending frame pivotally connected to one side of the slot, and a latching mechanism for releasably securing the flat panel display to the suspending frame. The suspending frame has a receiving space for receiving a flat panel display therein. A pair of latching members is formed on the roof mount and the suspending frame to lock the suspending frame within the slot. A release button controlling the engagement between the latching members can also be formed on the roof mount or the suspending frame. One side of the receiving space of the suspending frame is covered with a mirror plate or a glass plate.