Abstract: A two-layer wind-guiding shroud includes a base. The interior of the base includes a first wind-guiding channel and a second wind-guiding channel longitudinally overlapped with each other. The first wind-guiding channel has a first wind entrance and a first wind exit. The second wind-guiding channel has a second wind entrance and a second wind exit. The first wind exit and the second wind exit are staggered. By this arrangement, the airflow generated by a fan can be guided into different wind-guiding channels toward different locations, thereby increasing the heat-dissipating efficiency of the fan.

Abstract: A two-layer wind-guiding shroud includes a base. The interior of the base includes a first wind-guiding channel and a second wind-guiding channel longitudinally overlapped with each other. The first wind-guiding channel has a first wind entrance and a first wind exit. The second wind-guiding channel has a second wind entrance and a second wind exit. The first wind exit and the second wind exit are staggered. By this arrangement, the airflow generated by a fan can be guided into different wind-guiding channels toward different locations, thereby increasing the heat-dissipating efficiency of the fan.

Abstract: A system rack includes a casing and a tray connected therein. Both sides of the casing are provided with a first opening and a second opening respectively. A first accommodating region and a second accommodating region are provided respectively adjacent to the first opening and the second opening. A portion of hard disks received in the first accommodating region can be accessed from the first opening. The second accommodating region is partitioned horizontally into a hard disk zone and a tray zone. The remaining portion of the hard disks received in the second accommodating region can be accessed from the second opening. The casing is provided with a pair of rail seats in the tray zone. The tray is connected in the tray zone. The tray is provided with a pair of rails to correspond to the rail seats. With this structure, the hard disks received in the system rack can be accessed in dual directions, thereby receiving more hard disks in the casing.