A memory module assisting in efficient heat dissipation includes a motherboard, a plurality of fixing devices, a plurality of memory cards, and a plurality of dummy memory cards. The fixing devices are fixed on the motherboard side by side. The memory cards are fixed on some of the fixing devices as necessary, and the dummy memory cards are fixed on the remaining fixing devices which are vacant. The dummy memory cards inserted into the vacant fixing devices prevent the flow of air through the space above the vacant fixing devices. An electronic device including the memory module is also disclosed.

An electronic device with an extraction device and an extraction device thereof are provided. The extraction device includes a housing and a handle. A front side of the housing has two ends. The two ends have a pivot and a limiting member, respectively. The limiting member has at least one limiting recessed portion that has a draw bar and a hook. Two ends of the draw bar have a long groove and a pulling and gripping portion, respectively. The pulling and gripping portion is connected to the hook, the pivot is disposed in the long groove, and the hook can engage in the at least one limiting recessed portion along a sliding direction to be in an engaged state. The handle in the engaged state can slide along an unlocking direction so to depart from the at least one limiting recessed portion to be in an unengaged state.

In an example, a card retainer may include a latch to removably engage with a free end of an expansion card. Further, a card retainer may include a pivot mount to attach the latch to a system board of a computing device. In some examples, the latch is movable about the pivot mount between an open position and a closed position. The latch may exert a bias force on the free end of the expansion card in order to retain the expansion card to the system board in a secure manner when the latch is disposed in the closed position.

Provided is an expansion card installation module including an expansion-card bracket, an operating element, a stopper, and a driving component. The operating element is pivoted on the expansion-card bracket. The stopper is slidably disposed on the expansion-card bracket and is located at a stop position or a non-stop position. The stopper at the stop position is adapted to stop an expansion card in the expansion-card bracket, and the stopper at the non-stop position releases the expansion card, such that the expansion card is allowed to be removed from the expansion-card bracket. The driving component is movably disposed on the expansion-card bracket. The operating element is adapted to push against the stopper to move the stopper from the stop position to the non-stop position, and the driving component is adapted to position the stopper at the non-stop position. A server is also provided.

One variation of a modular computer system includes: a chassis; an expansion slot; and an expansion card. The chassis includes a main board. The expansion slot: is arranged on a lateral side of the chassis; and defines a receptacle inset a bottom side of the chassis. The expansion slot includes: a latching member arranged within the receptacle; and a female connected to the main board. The expansion card includes: an enclosure configured to couple within the receptacle; a latch receiver configured to transiently couple the latching member to maintain the first enclosure within the first receptacle; and a male connector extending from the enclosure, and configured to interface the female connector of the expansion slot. The expansion card further includes an external port arranged at the enclosure and configured to interface with an external device.

An electronic device including a chassis, a motherboard, an expansion card and a support. The motherboard is disposed in the chassis. The expansion card includes a circuit board assembly and a fixing plate. The circuit board assembly is fixed to a side of the fixing plate. The circuit board assembly is electrically connected to the motherboard and is fixed to the chassis via the fixing plate. A side of the support supports a side of the circuit board assembly that is located farthest from the fixing plate. A side of the support that is located farthest from the circuit board assembly is fixed to the motherboard and the chassis.

Securing a riser cage and/or electronic components coupled thereto within an information handling system can be accomplished using a riser cage apparatus. The riser cage may be configured to removably secure the electronic components to a surface of the information handling system using one or more fasteners configured to couple the riser cage to a surface of a chassis. The one or more fasteners may comprise a protrusion configured to engage a pin coupled to the surface. The protrusion of the one or more fasteners may be movable relative to the riser cage between a first locked position in which the pin coupled to the surface is engaged by the protrusion and a second unlocked position in which the pin coupled to the surface is not engaged by the protrusion.

A circuit board includes a board body, a card slot, a release structure, and a transmission mechanism. The card slot is disposed on the board body and adapted for inserting an expansion card. The release structure is rotatably disposed beside the card slot. The transmission mechanism includes a contact part and a stressed part that are linked to each other, wherein the contact part is connected to the release structure. When the stressed part receives an external force, the contact part is moved correspondingly, so that the release structure is rotated relative to the card slot, thereby releasing the expansion card.

A riser of an information handling system having an adjustable baffle that blocks air flowing through the riser from by-passing components of an expansion card, such as a PCIe card, installed in the riser. The baffle directs the flowing air across components of the expansion card to lower the operating temperature of the expansion card by convection. In some embodiments, part of the baffle is coupled to an angled slot of the riser body and another part of the baffle is coupled to a card holder so that movement of the card holder automatically adjusts the position of the baffle to direct otherwise by-passing air toward the components of the installed expansion card.

A latch mechanism for securing an expansion card assembly in a computer chassis includes a lever, a stop member, a rotary latch, a first biasing structure, and a second biasing structure. The lever includes a latching end and an opposing pinned end. The stop member extends from the pinned end. The rotary latch is connected to the latching end and includes a receiving chamber and a hook structure. The hook structure includes a notch for receiving a stop pin. The first biasing structure extends from the lever into the receiving chamber and is configured to urge the rotary latch into a locked position. The second biasing structure is configured to urge the lever about the pinned end to an open position.