Abstract: A suspension holding mechanism is provided. The suspension holding mechanism is adapted to mount an electronic device on a first ceiling structure or a second ceiling structure. The suspension holding mechanism includes a supporter and a holder. The holder is detachably connected to the supporter, wherein the holder includes a holder body, two first holding portions, and two second holding portions. The first holding portions are disposed on the holder body and are located on the first surface of the holder body. The second holding portions are disposed on the holder body and are located on the second surface of the holder body. In a first state, the first holding portions are connected to two sides of the first ceiling structure. In a second state, the second holding portions are connected to two sides of the second ceiling structure.

Abstract: A fastening bracket is provided. The fastening bracket is adapted to be affixed to a mounting surface and connected to an object. The fastening bracket includes a base and a connection unit. The base is for being affixed to the mounting surface. The connection unit is connected to the base, wherein the connection unit includes a unit inclined surface and at least one unit abutting portion. The object includes at least one object abutting portion. When the object is in a separated state, the object abutting portion is separated from the unit abutting portion, and when the object is in a connected state, the object abutting portion abuts the unit abutting portion. While the object is being moved from the separated state to the connected state, the object abuts the unit inclined surface and slides relative to the unit inclined surface.

Abstract: A suspension holding mechanism is provided. The suspension holding mechanism is adapted to mount an electronic device on a first ceiling structure or a second ceiling structure. The suspension holding mechanism includes a supporter and a holder. The holder is detachably connected to the supporter, wherein the holder includes a holder body, two first holding portions, and two second holding portions. The first holding portions are disposed on the holder body and are located on the first surface of the holder body. The second holding portions are disposed on the holder body and are located on the second surface of the holder body. In a first state, the first holding portions are connected to two sides of the first ceiling structure. In a second state, the second holding portions are connected to two sides of the second ceiling structure.

Abstract: A fastening bracket is provided. The fastening bracket is adapted to be affixed to a mounting surface and connected to an object. The fastening bracket includes a base and a connection unit. The base is for being affixed to the mounting surface. The connection unit is connected to the base, wherein the connection unit includes a unit inclined surface and at least one unit abutting portion. The object includes at least one object abutting portion. When the object is in a separated state, the object abutting portion is separated from the unit abutting portion, and when the object is in a connected state, the object abutting portion abuts the unit abutting portion. While the object is being moved from the separated state to the connected state, the object abuts the unit inclined surface and slides relative to the unit inclined surface.