Abstract: The present disclosure provides a reverse clamping compression device for CPO or NPO. The device includes a mechanical bolster placed on a main board, a compression cover covering optical modules, and a fastening connecting and fixing the compression cover to the mechanical bolster and protruding below the mechanical bolster. In the present disclosure, the compression cover above the optical modules is used to apply a compression force to the optical modules, and the spring element is placed in space below the main board, therefore, the space above the compression cover is not occupied, which can maximize the use of the space above the optical modules, greatly shorten the heat conduct path of the heat sink module, and ensure that the entire device is still assembled from top to bottom.

Abstract: The present disclosure provides an online upgrade method and system for a multi-core embedded system. The system includes a service system and a multi-core embedded system. The service system is used to provide upgrade firmware files. The multi-core embedded system includes: a system on chip, including a multi-core embedded processor system and a programmable logic module, the programmable logic module maps the memory of the multi-core embedded processor system to the service system; a communication module, establishing the communication connection between the system on chip and the service system, receiving and caches the upgraded firmware files from the service system; a DMA module, used for fast data transfer between the communication module and the memory of the multi-core embedded processor system; an interrupt controller, executing interrupt processing, so that the multi-core embedded processor system can obtain the upgraded firmware files through the memory.

Abstract: The present disclosure provides a fan module and a case including the fan module. The fan module includes a fan, a fan bracket and a traction structure. The fan bracket includes: a fixed bottom plate for carrying and fixing the fan; and a connection structure, connected to the fixed bottom plate and used for being connected to a case through plugging. The traction structure is mounted on the fan bracket, and is used for pulling the fan bracket from the inside of the case to the outside of the case. In the present disclosure, the fan module is plugged into the case, and is pulled to the outside of the case from the inside of the case through a traction interface. In this way, the fan maintenance is implemented without disassembling the case or cutting off the power, the maintenance efficiency is improved, and the maintenance cost is reduced.

Abstract: The present disclosure provides a liquid cooling assembly and a liquid cooling apparatus. The liquid cooling assembly includes: two heat conducting plates, configured to perform heat dissipation on a storage module attached to each of the heat conducting plates; a liquid cooling tube, disposed on an end of the each heat conducting plates and configured to perform liquid cooling on the heat conducting plates; and an elastic support, disposed between the two heat conducting plates and configured to apply elastic pressure to the heat conducting plates during attachment between the heat conducting plates and the storage modules, to cause the heat conducting plates to be tightly attached to surfaces of the storage modules, and cause the storage modules to be easily separated from the heat conducting plates after the elastic support is removed from the two heat conducting plates.

Abstract: The present disclosure provides an access arbitration system and method for a plurality of I2C communication-based master devices. The system includes: a slave device; a plurality of master devices, respectively connected to the slave device through I2C buses; and an arbitration logic controller, respectively connected to the plurality of master devices. When the master devices need to access the slave device, the master devices send access requests for an I2C bus access permission to the arbitration logic controller, the arbitration logic controller determines, based on the access requests of the master devices, the master device that establishes a communication connection with the slave device, and sends a connection confirmation instruction to the corresponding master device, and the master device that receives the connection confirmation instruction establishes the communication connection with the slave device. In the present disclosure, the reliability of system operation is improved.

Abstract: The present disclosure provides a tool-less assembly hard disk drive bracket, including: a fixation rack, including a fixation bracket portion and a fixation arm connected with a first side of the fixation bracket portion; a rotation rack, including a rotation arm connected with a second side of the fixation bracket portion, and a rotation bracket portion connected with the rotation arm, the rotation bracket portion is connected with the fixation bracket portion to support a hard disk drive; and at least two connecting components, arranged on an inner side of the fixation arm and the rotation arm, respectively, the connecting components connect and fix the hard disk drive in the structure formed by the fixation rack and the rotation rack. The present disclosure is simple in installation, convenient in assembly and disassembly, and easy to maintain, thereby having high economy and practicability.

Abstract: The present disclosure provides a fan module and a case including the fan module. The fan module includes a fan, a fan bracket and a traction structure. The fan bracket includes: a fixed bottom plate for carrying and fixing the fan; and a connection structure, connected to the fixed bottom plate and used for being connected to a case through plugging. The traction structure is mounted on the fan bracket, and is used for pulling the fan bracket from the inside of the case to the outside of the case. In the present disclosure, the fan module is plugged into the case, and is pulled to the outside of the case from the inside of the case through a traction interface. In this way, the fan maintenance is implemented without disassembling the case or cutting off the power, the maintenance efficiency is improved, and the maintenance cost is reduced.

Abstract: The present disclosure provides a chassis and an electronic device applying the chassis. The chassis includes: a chassis body; the chassis body is a 2U chassis body or a 4U chassis body; a hard disk module, installed in a front end area of the chassis body; a power supply module, installed at one side of a rear end area of the chassis body; a controller module, installed in a remaining rear end area of the chassis body except the power supply module, parallel with the power supply module, and including a plurality of pluggable functional modules; a middle board, connected with the power supply module, the hard disk module, and the control module, respectively, to realize the electrical connection between the power supply module, the hard disk module, and the control module. The present disclosure can improve the versatility of the chassis modules.

Abstract: The present disclosure provides a dual-backplane structure and electronic device using the same. The dual-backplane structure includes: a first backplane having an opening, and the front side of the first backplane includes at least one connector connected with a connector of the second assembly surface on a main board of a control module; a second backplane disposed on the back of the first backplane, the front side of the second backplane includes a connector connected with a connector of the first assembly surface on a main board of a control module; the back side of the second backplane includes a plurality of hard disk connectors for connecting with the hard disk module. At least one connector on the front side of the second backplane is connected with the connector corresponding to the first assembly surface on the main board through the opening of the first backplane.

Abstract: The present disclosure provides an online upgrade method and system for a multi-core embedded system. The system includes a service system and a multi-core embedded system. The service system is used to provide upgrade firmware files. The multi-core embedded system includes: a system on chip, including a multi-core embedded processor system and a programmable logic module, the programmable logic module maps the memory of the multi-core embedded processor system to the service system; a communication module, establishing the communication connection between the system on chip and the service system, receiving and caches the upgraded firmware files from the service system; a DMA module, used for fast data transfer between the communication module and the memory of the multi-core embedded processor system; an interrupt controller, executing interrupt processing, so that the multi-core embedded processor system can obtain the upgraded firmware files through the memory.

Abstract: The present disclosure provides a cable management arm and a rack applying the cable management arm. The cable management arm includes: a left cable management assembly, a right cable management assembly, a connection assembly, and an elastic assembly. When a chassis in the rack is pulled out of the rack, the elastic assembly causes the left cable management assembly and the right cable management assembly to move following the movement of the controller at the rear of the chassis in the pulling out direction, and causes the left cable management assembly and the right cable management assembly to reset due to elastic force. The connection assembly and the elastic assembly assist the movement of the left cable management assembly and the right cable management assembly to cause their resetting, and ensure them to move in an approximately horizontal space.

Abstract: The disclosure provides a layout method for backplane connector, a backplane, and an electronic terminal. The backplane includes: a circuit board; and a first connector unit. The first connector unit includes at least one group of first connector modules, each group of the first connector modules comprises a front connector and a back connector; pins in odd-numbered columns of the front connector have the same arrangement as pins in odd-numbered columns of the back connector, pins in even-numbered columns of the front connector have the same arrangement as pins in even-numbered columns of the back connector; the front connector is mounted on the front of the circuit board, the back connector is on the back of the circuit board, and the back connector is staggered one column of pins relative to the front of the front connector.

Abstract: The present disclosure discloses a liquid-cooled cold plate device, comprising a microchannel cold plate for dissipating heat of the electronic system, at least two microchannel groups, disposed inside the microchannel cold plate; at least one liquid inlet, provided on the microchannel cold plate and used for the cooling liquid to flow in; at least one liquid outlet provided on the microchannel cold plate and used for the cooling liquid to flow out; the cooling liquid entering the liquid inlet is divided into one cooling liquid branch; the cooling liquid branch flows bidirectionally through the microchannels group. The present disclosure uses a combination of microchannel cold plates and microchannel groups, greatly improves the heat dissipation efficiency, reduces the influence of thermal cascade, thus is beneficial to the efficient heat dissipation of electronic system.

Abstract: The present disclosure provides a dual-backplane structure and electronic device using the same. The dual-backplane structure includes: a first backplane having an opening, and the front side of the first backplane includes at least one connector connected with a connector of the second assembly surface on a main board of a control module; a second backplane disposed on the back of the first backplane, the front side of the second backplane includes a connector connected with a connector of the first assembly surface on a main board of a control module; the back side of the second backplane includes a plurality of hard disk connectors for connecting with the hard disk module. At least one connector on the front side of the second backplane is connected with the connector corresponding to the first assembly surface on the main board through the opening of the first backplane.

Abstract: The present disclosure provides a chassis and an electronic device applying the chassis. The chassis includes: a chassis body; the chassis body is a 2U chassis body or a 4U chassis body; a hard disk module, installed in a front end area of the chassis body; a power supply module, installed at one side of a rear end area of the chassis body; a controller module, installed in a remaining rear end area of the chassis body except the power supply module, parallel with the power supply module, and including a plurality of pluggable functional modules; a middle board, connected with the power supply module, the hard disk module, and the control module, respectively, to realize the electrical connection between the power supply module, the hard disk module, and the control module. The present disclosure can improve the versatility of the chassis modules.

Abstract: The present disclosure provides a chassis, a chassis monitoring system, and a chassis monitoring method. The chassis includes: at least one PCIe device; a PCIe switch including an upstream bridge port for connecting with a host of an electronic device and at least one downstream bridge port for connecting with the PCIe device; a virtual endpoint, configured in the PCIe switch, for receiving the SES instruction sent by the host, causing the firmware in the PCIe switch to execute the SES instruction, and feeding back an execution result to the host after the firmware in the PCIe switch generates the execution result according to the SES instruction, the host monitors the chassis according to the execution result.

Abstract: A closed loop liquid cooler and an electronic device using the same. The closed loop liquid cooler includes: a first liquid cooling module and a second liquid cooling module, where a cooling reflux at an output end of the first liquid cooling module is outputted to a cooling liquid input end of the second liquid cooling module; and a cooling reflux at an output end of the second liquid cooling module is outputted to a cooling liquid input end of the first liquid cooling module.

Abstract: The present disclosure provides a cable management arm and a rack applying the cable management arm. The cable management arm includes: a left cable management assembly, a right cable management assembly, a connection assembly, and an elastic assembly. When a chassis in the rack is pulled out of the rack, the elastic assembly causes the left cable management assembly and the right cable management assembly to move following the movement of the controller at the rear of the chassis in the pulling out direction, and causes the left cable management assembly and the right cable management assembly to reset due to elastic force. The connection assembly and the elastic assembly assist the movement of the left cable management assembly and the right cable management assembly to cause their resetting, and ensure them to move in an approximately horizontal space.

Abstract: The disclosure provides a layout method for backplane connector, a backplane, and an electronic terminal. The backplane includes: a circuit board; and a first connector unit. The first connector unit includes at least one group of first connector modules, each group of the first connector modules comprises a front connector and a back connector; pins in odd-numbered columns of the front connector have the same arrangement as pins in odd-numbered columns of the back connector, pins in even-numbered columns of the front connector have the same arrangement as pins in even-numbered columns of the back connector; the front connector is mounted on the front of the circuit board, the back connector is on the back of the circuit board, and the back connector is staggered one column of pins relative to the front of the front connector.

Abstract: The present disclosure provides a tool-less assembly hard disk drive bracket, including: a fixation rack, including a fixation bracket portion and a fixation arm connected with a first side of the fixation bracket portion; a rotation rack, including a rotation arm connected with a second side of the fixation bracket portion, and a rotation bracket portion connected with the rotation arm, the rotation bracket portion is connected with the fixation bracket portion to support a hard disk drive; and at least two connecting components, arranged on an inner side of the fixation arm and the rotation arm, respectively, the connecting components connect and fix the hard disk drive in the structure formed by the fixation rack and the rotation rack. The present disclosure is simple in installation, convenient in assembly and disassembly, and easy to maintain, thereby having high economy and practicability.