Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: A target image of a target circuit board and a gold image of a gold circuit board are taken by an image acquisition system. Fiducial points are located on the target image and on the gold image. Perspective transformation is performed on the target image using the fiducial points on the target image for reference and on the gold image using the fiducial points on the gold image for reference. After perspective transformation, an anomalous section of the target image is identified by identifying pixels that have different intensities between the target image and the gold image, the anomalous section being indicative of an unauthorized modification to the target circuit board.

Abstract: The present disclosure is related to electronic devices. At least some embodiments of the present disclosure relate to an electronic device comprising a circuit board, a first connector, and a second connector. The first connector and the second connector are disposed on the circuit board. The first connector is different from the second connector. The second connector is adjacent to the first connector. The first connector is arranged along a reference line in a first direction, and the second connector is adjacent to the reference line in the first direction.

Abstract: A fluid immersion cooling system includes a fluid tank that contains a layer of a dual-phase coolant fluid and one or more layers of single-phase coolant fluids. The dual-phase and single-phase coolant fluids are immiscible, with the dual-phase coolant fluid having a lower boiling point and higher density than a single-phase coolant fluid. A substrate of an electronic system is submerged in the tank such that high heat-generating components are immersed at least in the layer of the dual-phase coolant fluid. Heat from the components is dissipated to the dual-phase coolant fluid to generate vapor bubbles of the dual-phase coolant fluid. The vapor bubbles rise to a layer of a single-phase coolant fluid that is above the layer of the dual-phase coolant fluid. The vapor bubbles condense to droplets of the dual-phase coolant fluid. The droplets fall down into the layer of the dual-phase coolant fluid.

Abstract: A cable assembly has a cable with a transceiver module on one end. The transceiver module is plugged into an interface connector of a circuit card, which also has a network interface controller chip, an onboard non-volatile memory, and a control unit. The control unit reads cable assembly data stored in a non-volatile memory of the transceiver module over a serial bus and copies the cable assembly data to the onboard non-volatile memory. The control unit initiates transfer of the cable assembly data from the onboard non-volatile memory to a communication port of the network interface controller chip over another serial bus.

Abstract: A telecommunication cabinet with anti-theft function includes a cabinet body, a cabinet door, a fan module, and a plurality of coupling parts. The cabinet body includes a cabinet and a telecommunication module. The cabinet door covers the cabinet body and is provided with a snap hole. A bottom side of the cabinet door is provided with an installation opening. The fan module includes multiple fans and an elastic clip, and the elastic clip is provided with a bump. When the fan module is placed into the cabinet door from the installation opening, the bump is positioned in the snap hole. The fan module is coupled to the bottom side of the cabinet door.

Abstract: A cable assembly has a cable with a transceiver module on one end. The transceiver module is plugged into an interface connector of a circuit card, which also has a network interface controller chip, an onboard non-volatile memory, and a control unit. The control unit reads cable assembly data stored in a non-volatile memory of the transceiver module over a serial bus and copies the cable assembly data to the onboard non-volatile memory. The control unit initiates transfer of the cable assembly data from the onboard non-volatile memory to a communication port of the network interface controller chip over another serial bus.

Abstract: A telecommunication cabinet with anti-theft function includes a cabinet body, a cabinet door, a fan module, and a plurality of coupling parts. The cabinet body includes a cabinet and a telecommunication module. The cabinet door covers the cabinet body and is provided with a snap hole. A bottom side of the cabinet door is provided with an installation opening. The fan module includes multiple fans and an elastic clip, and the elastic clip is provided with a bump. When the fan module is placed into the cabinet door from the installation opening, the bump is positioned in the snap hole. The fan module is coupled to the bottom side of the cabinet door.

Abstract: A telecommunication cabinet includes a cabinet body, a cabinet door module, and a detachable hinge. The cabinet body includes a cabinet and a telecommunication module disposed in the cabinet. The cabinet door module includes a cabinet door and a function module. The detachable hinge includes a first shaft seat, a second shaft seat and a pivot shaft. The cabinet door module is pivotally rotatable with respect to the cabinet through the pivot shaft inserted to the first shaft seat and the second shaft seat. The cabinet door module is detachably coupled to the cabinet body to facilitate replacement.

Abstract: A computer network includes a server computer having communication ports that are wired to switch ports of two separate network switches. The network switches receive link layer discovery protocol (LLDP) packets from other network devices, and automatically aggregate corresponding switch ports into a port channel aggregation based on the contents of the LLDP packets.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A telecommunication cabinet includes a cabinet body, a cabinet door module, and a detachable hinge. The cabinet body includes a cabinet and a telecommunication module disposed in the cabinet. The cabinet door module includes a cabinet door and a function module. The detachable hinge includes a first shaft seat, a second shaft seat and a pivot shaft. The cabinet door module is pivotally rotatable with respect to the cabinet through the pivot shaft inserted to the first shaft seat and the second shaft seat. The cabinet door module is detachably coupled to the cabinet body to facilitate replacement.

Abstract: A server management switch discovers and identifies its switch ports that are connected to communication ports of baseband management controllers (BMC's) of server computers. The server management switch isolates the identified BMC-connected switch ports such that network traffic on a BMC-connected switch port is restricted to a switch port that has a connection, either directly by a link or over a server management network, to a server management computer. Network traffic on BMC-connected switch ports are monitored and controlled in various ways to further protect the BMC's from security attacks.

Abstract: A circuit board has an electrical circuit and a connector that is attached to the circuit board. The connector has metal contacts. A housing of the connector has an embedded reference metal layer that is disposed under a single-ended metal contact or differential metal contacts. The reference metal layer sets the impedance of the single-ended metal contact or the differential metal contacts.

Abstract: A pole mount system has an enclosure, an enclosure mounting assembly, and a clamp system. The enclosure mounting assembly is affixed to the exterior of the enclosure. The clamp system grips the pole. The enclosure mounting assembly and the clamp system have complementary fastening structures to secure the enclosure to the pole.

Abstract: A target image of a target circuit board and a gold image of a gold circuit board are taken by an image acquisition system. Fiducial points are located on the target image and on the gold image. Perspective transformation is performed on the target image using the fiducial points on the target image for reference and on the gold image using the fiducial points on the gold image for reference. After perspective transformation, an anomalous section of the target image is identified by identifying pixels that have different intensities between the target image and the gold image, the anomalous section being indicative of an unauthorized modification to the target circuit board.

Abstract: A system includes a support frame residing within a region conforming to a 3.5-inch form-factor disk drive specification, and a plurality of data storage drives, wherein each data storage drive resides entirely within the region. Each data storage drive conforms to a 2.5-inch form-factor disk drive specification, is mounted on the support frame via at least one external mounting hole that is positioned on a surface of the data storage drive in conformance with the 2.5-inch form-factor disk drive specification, is communicatively coupled to a backplane via an electrical connection device, and the electrical connection device includes a flexible electrical connector that, when coupled to a first end of the data storage drive, does not extend beyond the region, and has a removal tab through which a removal force is exerted to urge the data storage drive away from the support frame.

Abstract: A computer network includes a server computer having communication ports that are wired to switch ports of two separate network switches. The network switches receive link aggregation control packets from the server computer, and automatically aggregate corresponding switch ports into a single logical port channel based on contents of the control packets.

Abstract: A circuit board has an edge connector with signal traces. The signal traces are formed on a dielectric layer of the circuit board. A reference trace is formed within the dielectric layer or on another surface of the dielectric layer. Parameters of the reference trace are adjusted to set an impedance of a single-ended signal trace or a differential impedance of two adjacent signal traces.

Abstract: An apparatus including a control unit, a memory having computer program code, and N groups of storage units electrically connected to the control unit is disclosed. Each of the N groups of storage units has N storage units, each of the N storage units has N storage regions, wherein N is a positive integer. The memory and the computer program code configured to, with the control unit, cause the apparatus to perform: storing a first data segment into an ith storage region of a first storage unit of a kth group of storage units; storing a fourth data segment into an ith storage region of a first storage it of a (k+1)th group of storage units; storing a fifth data segment into an ith storage region of a second storage unit of the (k+1)th group of storage units; and storing a sixth data segment into an ith storage region of a third storage unit of the (k+1)th group of storage units.