A circuit board is applied to be inserted an expansion card, the expansion card includes a positioning part. The circuit board includes a board body, a slot, a release structure and a transmission mechanism. The slot is disposed on the board body. The release structure is movably disposed beside the slot along a first direction, and includes a first inclined surface and a blocking portion for limiting the positioning part. The transmission mechanism includes a linkage part and a forcing part which are linked with each other. The linkage part is connected to the release structure. When the forcing part receives an external force, the linkage part moves to move the release structure to the first direction, and releases the limitation of the positioning part by the blocking portion.

An integrated latch apparatus for a securing and releasing computer equipment from a chassis includes a support bracket, a rotating shaft, a sliding plate having a latching extension, and a handle having a rotating end. The handle is secured at the rotating end to the support bracket about the rotating shaft. The rotating end of the handle includes nudging extensions. A torsion spring is disposed on the rotating shaft such that the torsion spring biases the support bracket against the handle such that the handle is in an open position when the torsion spring is extended towards an equilibrium state and in a closed position when the torsion spring is biased toward a fully compressed state. The nudging extensions engage and laterally move a sliding plate when the handle is rotated between the open position and the closed position.

An electronic device having a detachable memory is provided with a docking connector, and includes a device body and a memory. The device body has an accommodating slot and a stopping portion provided corresponding to the accommodating slot, and the stopping portion and the accommodating slot jointly form a displacement space in between. The memory is provided with a connector and a protruding stopped portion. When the memory is accommodated in the accommodating slot, the stopped portion is moved along into the displacement space and is stopped by the stopping portion, and the connector is docked with the docking connector. Thus, the memory is provided with an anti-misplugging effect.

An electronic device includes a casing and an expansion card. The casing includes a chassis and an installation frame. The installation frame is pivotably disposed on the chassis. The expansion card is fixed to the installation frame. The expansion card is movable along with the installation frame so as to be located in the chassis or at least partially located outside the chassis.

A locking mechanism for a computing device controls movement of a removable module within a computer chassis. The locking mechanism comprises a lock pin, a head, and a spring stopper. The lock pin includes an elongated shaft and a head. The spring stopper is disposed on the elongated shaft. The spring is disposed about the elongated shaft such that the spring extends from the spring stopper toward an end of the elongated shaft. As the lock pin moves along a longitudinal axis of the elongated shaft from a first position to a second position, the spring is configured to compress between the spring stopper and a fixed bracket in the computer chassis. The opposite second end extends through a hole in the removable module, thereby preventing the removable module from being removed from the computer chassis.

The present disclosure provides a fixing device for fixing an external electronic component on a motherboard in a chassis. The fixing device includes a fixing block and a telescopic block. The fixing block is fixed on the chassis. One end of the telescopic block is slidably mounted in the fixing block, the other end protrudes from the fixing block and holds the electronic component. A chassis including the above-described fixing device to hold electronic components of different sizes is also provided.

An instrumentation system that can include a chassis configured to receive a PCB assembly, where the PCB assembly can include a front edge forming a front plane, a first rear edge forming a first rear plane, and a second rear edge forming a second rear plane, with the first rear plane being spaced a greater distance away from the front plane than the second rear plane, and where the chassis can include a plurality of card slots configured to receive the PCB assembly, a 3U backplane configured to couple with the second rear edge of the card when the PCB assembly is installed in one of the plurality of card slots in the chassis.

A latch mechanism includes a bracket, a sliding element slidably located on the bracket, a latch portion fixedly connected to the sliding element, an elastic element connected to the bracket and the sliding element, and a trigger element including an elongated frame, a through hole and a pressed portion. The elongated frame is slidably located on the bracket, the through hole is formed on one surface of the elongated frame, and the pressed portion is disposed on the one surface of the elongated frame, and directly pressed by the latch portion. When the trigger element is pushed until the through hole is moved to the latch portion, the first elastic element moves the latch portion to extend into the through hole.

A swing arm lock mechanism for securing a printed circuit board to a bracket includes a main body, a hooked arm, and an aperture in the main body. The hooked arm extends from and is integral with the main body. The hooked arm and main body define an open-ended slot for engaging a lock pin disposed on the bracket. The aperture receives a fastener for securing the main body to the printed circuit board such that the main body and hooked arm can rotate about a central axis of the fastener from a first unlocked position to a second locked position.

A multi-board mid-plane includes a disk backplane board (DBB) having a front side and a rear side. Venting holes are provided within the DBB extending between the front side of the DBB and the rear side of the DBB. The multi-board mid-plane also includes a controller backplane board (CBB) having a front side and a rear side. The front side of the CBB includes venting holes provided within the CBB extending between the front side of the CBB and the rear side of the CBB. A top fabric plane board (TFPB) and a bottom fabric plane board (BFPB) are provided for connecting the DBB with the CBB. A combination of the DBB and the CBB has a venting ratio that is equal to a lower of the venting ratio of the DBB and the venting ratio of the CBB.