An adapter device enabling a peripheral component interconnect express (PCIe) slot in a server to additionally accept an open compute project (OCP) card includes a bracket assembly compatible with an OCP card and a server. The adapter device comprises a chassis, a front-end bracket, an adapter assembly, and a rail assembly. The front-end bracket defines a first inserting port for OCP card insertion, the adapter assembly comprises OCP interface, adapter circuit board, and PCIe interface. The PCIe interface is connected to the adapter circuit board, and the adapter circuit board provides electrical connection and conversion between OCP interface and PCIe interface. The rail assembly between the front-end bracket and the OCP interface carries in the OCP card when the card is inserted.

A method for installing a heavy and bulky switching module, in particular a static transfer switch, in an electrical cabinet, by way of an installation kit to make the switching module easily removable and interchangeable, regardless of its size and weight. The electrical cabinet is equipped with the installation kit including at least two support rails, extendable between an extended position outside, and a retracted position inside, the electrical cabinet, and forming two parallel rolling paths. The switching module is equipped with rollers in two parallel rows, arranged to circulate on the rolling paths to enable movement of the switching module relative to the electrical cabinet by pushing and pulling with minimal effort. A raised transport pallet is also used to facilitate handling of the switching module outside of the electrical cabinet by a simple industrial truck, without resorting to a lifting device.

A server apparatus includes a casing having a first engaging structure, a tray mechanism including a tray, a handle and an elastic member, and a server module disposed on the tray. The handle is pivoted to the tray. The elastic member connected to the tray and has an interfering structure. The interfering structure interferes with the handle to position the handle for making the handle not interfere with the first engaging structure when the tray is inserted into the casing along an insertion direction.

A device having fool-proofing structure is configured to be inserted into a cabinet along a first direction and includes a case and an elastic sheet module. The elastic sheet module is disposed on a side of the case and includes a first end disposed on the case, a second end opposite to the first end, a first protrusion portion and a second protrusion portion. The first protrusion portion is adjacent to the second end, protrudes from the case and is configured to abut against the cabinet. The second protrusion portion is farther from the second end than the first protrusion portion, protrudes from the case, and is configured to make the second end and the first protrusion portion move toward the interior of the case as being pressed by a force.

A subrack including a frame defining a subrack space and adapted to receive a device module to an operative position, the frame comprising four side walls and an end wall. The subrack comprises a coupling system adapted for coupling the subrack to four other subracks in order to form a subrack matrix, the coupling system comprising at least one wall recess on an inner surface of each of the side walls, and at least one primary screw hole in each of the side walls such that the at least one primary screw hole is located in the at least one wall recess.

A device having fool-proofing structure is configured to be inserted into a cabinet along a first direction and includes a case and an elastic sheet module. The elastic sheet module is disposed on a side of the case and includes a first end disposed on the case, a second end opposite to the first end, a first protrusion portion and a second protrusion portion. The first protrusion portion is adjacent to the second end, protrudes from the case and is configured to abut against the cabinet. The second protrusion portion is farther from the second end than the first protrusion portion, protrudes from the case, and is configured to make the second end and the first protrusion portion move toward the interior of the case as being pressed by a force.

An electronic device casing includes a body, a movable apparatus, and a handle structure. The body comprises a first stopping surface and a second stopping surface disposed opposite to each other. The movable apparatus is adapted to be detachably assembled in the body. The handle structure is pivotally disposed to the movable apparatus. The handle structure comprises a first arm corresponding to the first stopping surface and a second arm corresponding to the second stopping surface. The movable apparatus is adapted to move between a removed position and an assembled position by rotating the handle structure between an upper pulled position and a lower pressed position.

A retention assembly includes a first retention member with a first set of ribs and a second set of ribs. The first set of ribs are positioned to form slots, which are shaped to receive data storage devices. The first set of ribs are arranged to separate adjacent data storage devices and have a first length. The second set of ribs extend into respective slots to form air channels within the slots, and the second set of ribs have a second length that is shorter than the first length.

A device having fool-proofing structure is configured to be inserted into a cabinet along a first direction and includes a case and an elastic sheet module. The elastic sheet module is disposed on a side of the case and includes a first end disposed on the case, a second end opposite to the first end, a first protrusion portion and a second protrusion portion. The first protrusion portion is adjacent to the second end, protrudes from the case and is configured to abut against the cabinet. The second protrusion portion is farther from the second end than the first protrusion portion, protrudes from the case, and is configured to make the second end and the first protrusion portion move toward the interior of the case as being pressed by a force.

A hard disk supporting structure is provided. The hard disk supporting structure includes a hard disk rack, a crawler mechanism, and a motor. The hard disk rack is for disposing at least one hard disk. A crawler of the crawler mechanism is fixedly connected with the hard disk rack. The motor is connected to a driving gear of the crawler mechanism. The motor drives the rotation of the driving gear, to enable the crawler to drive the hard disk rack to move back and forth. The hard disk supporting structure can automatically move the hard disk rack back and forth through a structure with automatic telescopic function, which greatly saves labor, and improves efficiency.