Abstract: A retaining mechanism for retaining a circuit card includes a chassis (10), and a retaining member (80). The chassis has a front panel (14) and an opposite back panel (16). The front panel is configured for mounting a first edge of the circuit card thereon. The retaining member is pivotably attached to the back panel, and the retaining member defines a traversing securing slot (84) for receiving a second edge of the circuit card opposite to the first edge. The retaining member has a resilient hook (80) for detachably engaging with the back panel.

Abstract: A mounting apparatus comprises two drive brackets (11) for receiving disk drives, a back panel (13), and a securing member (20). The back panel has a securing opening (134) defined therein. The securing member is pivotably mounted between the two brackets for rotating to engage with the securing opening of the back panel to secure the back panel on the drive brackets during the process that the back panel is mounted to the drive brackets.

Abstract: An airflow-guiding device for guiding airflow to heat generating components includes an airflow-guiding shield and at least one airflow-guiding piece rotatable in the airflow-guiding shield. The airflow-guiding piece includes a guiding surface guiding airflow, and a blocking surface blocking airflow. An airflow-guiding position where the guiding surface faces the heat generating components guides airflow thereto, and an airflow-blocking position where the blocking surface faces the airflow blocks the airflow. The airflow-guiding piece rotates between the airflow-guiding position and the airflow-blocking position.