Abstract: A slot assembly configured for being inserted by a workpiece. The slot assembly comprises a holder body, a substrate, a push member and a heat spreader. The substrate and the holder body together form an accommodating space therebetween. The push member is movable between a released position and a pressed position. The push member is configured for being moved from the released position to the pressed position by being pushed by the workpiece. The heat spreader is movably disposed on the substrate and located in the accommodating space. The heat spreader has a thermal contact surface facing away from the substrate. The thermal contact surface is configured for being in thermal contact with the workpiece. When the push member is located at the pressed position, the heat spreader is located at a thermal contact position where the thermal contact surface is in thermal contact with the workpiece.

Abstract: A slot assembly includes a base, a tray and a fastener. The base has an accommodating space having an opening end. The tray is movably located in the accommodating space. The tray has a bearing surface and is movable between a removed position and an inserted position. The tray is moved from the removed position to the inserted position by being pushed by a workpiece. The fastener is movably disposed on the tray. When the tray is at the removed position, the fastener is at a released position, and a second engaging portion of the fastener is located away from the bearing surface and detached from the first engaging portion. When the tray is at the inserted position, the fastener is at a fixed position, and the second engaging portion of the fastener is located close to the bearing surface and fixed to the first engaging portion.