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 invention provides a high speed signal fan-out method for BGA and a PCB using the same. The method comprises: providing a printed circuit board (PCB), providing a plurality of vias and signal traces of the vias on the PCB; and providing back-drilled holes for routing of other signal traces at positions corresponding to the vias. The vias are arranged into a plurality of straight lines from an edge to the center of the PCB. The plurality of straight lines each is horizontal or vertical. The signal traces of the vias in a straight line are arranged from high to low or from low to high with respect to routing positions of the vias, and the back-drilled holes of the plurality of vias are arranged in descending or ascending order corresponding to the depths of the back-drilled holes.

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 storage chassis and an electronic device including the storage chassis. The storage chassis has a first receiving space at an upper portion of a rear end, the first receiving space is configured to be shared by a plurality of functional modules, and each functional module includes cable management supports, CPU computation control modules or storage hard disks. In the present disclosure, more modules can be arranged in a limited chassis space flexibly and reasonably, thereby improving the utilization of the chassis space and implementing configuration of various functions.

Abstract: The present disclosure provides a storage cover plate and a storage chassis using the same. The storage cover plate is covered on a storage chassis for accommodating a plurality of storages, wherein the storage cover plate comprises a plurality of closely arranged sub-covers, the plurality of closely arranged sub-covers each corresponds to a row of storages respectively, the plurality of the sub-covers each is capable of sliding along edges of the storage chassis, and the outermost sub-cover is locked with the storage chassis through a locking part. If one of storages needs to be operated, an unlocking operation is performed first and then the sub-cover above the storage is pushed, so that the storage below the sub-cover can be operated directly. The present disclosure is easy to install and convenient to assemble, disassemble and maintain, therefore achieving high economical efficacy and practicability.

Abstract: The present disclosure provides 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 storage cover plate and a storage chassis using the same. The storage cover plate is covered on a storage chassis for accommodating a plurality of storages, wherein the storage cover plate comprises a plurality of closely arranged sub-covers, the plurality of closely arranged sub-covers each corresponds to a row of storages respectively, the plurality of the sub-covers each is capable of sliding along edges of the storage chassis, and the outermost sub-cover is locked with the storage chassis through a locking part. If one of storages needs to be operated, an unlocking operation is performed first and then the sub-cover above the storage is pushed, so that the storage below the sub-cover can be operated directly. The present disclosure is easy to install and convenient to assemble, disassemble and maintain, therefore achieving high economical efficacy and practicability.

Abstract: The present invention provides a signal trace fan-out method for double-sided mounting on a PCB, including: respectively providing one or more blind vias on the top-layer surface and the bottom-layer surface of a PCB; and fanning out, through each of the blind vias, one or more signal traces of to-be-mounted components on the top-layer surface and the bottom-layer surface of the PCB. The number and positions of the blind vias are set based on the size of routing space when the to-be-mounted component is mounted on the top-layer surface or the bottom-layer surface of the PCB. In a manner of combining the blind vias with through holes, the present invention achieves successful fan-out of the signal traces when QSFP-DD connectors are mounted at same positions on both the top layer and the bottom layer of the PCB, and ensures relatively good signal integrality.

Abstract: A liquid cooling device, which is used for performing heat dissipation to switching chips and optical modules in the electronic device, and comprises: a first cooling plate attached to the switching chip and used for performing heat dissipation to the switching chip; a second cooling plate attached to the optical module and used for performing heat dissipation to the optical module; an air-liquid heat exchanger used for containing cooling liquid and performing cooling to backflow cooling liquid through cooling air; a transmission pipe used for sequentially transmitting the cooling liquid flowing out from the air-liquid heat exchanger to the first cooling plate and the second cooling plate, which then flows back to the air-liquid heat exchanger; and a power device used for controlling the cooling liquid in the transmission pipe to be sequentially transmitted to the first cooling plate and the second plate and then flow back.

Abstract: An anti-backflow device for a fan unit, which is fabricated by cutting a rectangle thin plate, includes: a plate body defining an air outlet to permit air outflow upon activation of the fan unit, and having at least two inner peripheral sides; a plurality of connection arms; and a plurality of blades. Each blade is connected a pair of the connection arms, which are in turn connected to two connecting holes formed in the inner peripheral sides of the plate body.

Abstract: An electronic apparatus having function of switching node modules includes at least two node modules, a shared I/O module having a first I/O interface connected with an external device, a second I/O interface electrically connected with the at least two node modules and a switching module connecting the at least two node modules. The shared I/O module is used to cause the shared I/O module to communicate with one node module in the at least two node modules through the second I/O interface according to a selection signal when receiving the selection signal. The shared I/O module integrates multiple communication ports and switches the node module communicating with the shared I/O module according to a selection signal, the shared I/O module also can be designed as a shared I/O module combined by multiple different ports in advance to perform corresponding replacement according to user needs.

Abstract: A liquid cooling device, which is used for performing heat dissipation to switching chips and optical modules in the electronic device, and comprises: a first cooling plate attached to the switching chip and used for performing heat dissipation to the switching chip; a second cooling plate attached to the optical module and used for performing heat dissipation to the optical module; an air-liquid heat exchanger used for containing cooling liquid and performing cooling to backflow cooling liquid through cooling air; a transmission pipe used for sequentially transmitting the cooling liquid flowing out from the air-liquid heat exchanger to the first cooling plate and the second cooling plate, which then flows back to the air-liquid heat exchanger; and a power device used for controlling the cooling liquid in the transmission pipe to be sequentially transmitted to the first cooling plate and the second plate and then flow back.

Abstract: Provided is a cable management device and a rack-mounted equipment system applying the cable management device. By putting the entire cable management device on a case instead of behind the case, the length of the entire case is reduced and an entire server or storage can be mounted in a shorter rack. In addition, the cable management device can simultaneously serve upper and lower servers or memories, can also solely serve a lower server or memory, and is flexible and efficient to use.

Abstract: Provided is a cable management device and a rack-mounted equipment system applying the cable management device. By putting the entire cable management device on a case instead of behind the case, the length of the entire case is reduced and an entire server or storage can be mounted in a shorter rack. In addition, the cable management device can simultaneously serve upper and lower servers or memories, can also solely serve a lower server or memory, and is flexible and efficient to use.

Abstract: A cable management device/arm is applied to a rack-mounted device system. Cables of a device are managed through a variable-length foldable cable management device/arm. In addition, when an electronic device is fully held in a rack, the cable management device/arm is held at a certain angle in the rack, the interference between the cable management device/arm and a power cable can be prevented from being produced and the length of the cable management device/arm can be flexibly adjusted according to specific application scenarios.

Abstract: A cable management device/arm is applied to a rack-mounted device system. Cables of a device are managed through a variable-length foldable cable management device/arm. In addition, when an electronic device is fully held in a rack, the cable management device/arm is held at a certain angle in the rack, the interference between the cable management device/arm and a power cable can be prevented from being produced and the length of the cable management device/arm can be flexibly adjusted according to specific application scenarios.

Abstract: Provided are a fan control method and a fan control system. The fan control method of the present invention includes the steps of predetermining a reliable operating temperature of a hard disk; creating a storing a corresponding relationship between an average hard disk temperature and a fan speed, and creating and storing a corresponding relationship between a hard disk temperature greater than the reliable operating temperature and a fan speed; reading actual temperatures of the plurality of hard disks; comparing the actual temperatures of the plurality of hard disks with the reliable operating temperature; computing an average temperature of the plurality of hard disks; and outputting a control signal to adjust the fan speed based on the stored corresponding relationship between an average hard disk temperature and a fan speed. Accordingly, the present invention may increase hard disk reliability and decrease power dissipation of a fan and system noise.

Abstract: The present invention relates to an electronic apparatus, the back plate, the I/O module, the power supply, the node module and the like are reasonably and neatly laid out in the case, so that more modules can be laid out in a limited case space, thus having a high utilization rate and a low cost. Besides, the I/O module, the power supply module and the node module are separately designed, and the modules cooperate with each other; the modules are snap structures, and can be assembled and disassembled by hand, which increases operation and maintenance efficiency. Moreover, the completion of the signal transmission among different modules mainly depends on the golden finger or the high-speed back plate connector, thus the case is clean and neat inside.

Abstract: The present invention relates to a data communication system for storage management, the system comprises a storage management apparatus, an expander enclosure SCSI enclosure services (SES), the expander enclosure SES is connected to the storage management apparatus through a communication line, and a mainboard baseboard management controller (BMC), the mainboard BMC is connected to the expander enclosure SES through a communication medium, wherein each of the expander enclosure SES and the mainboard BMC has a instruction converting module.

Abstract: The present invention provides a method for stream testing by a switching hub including the steps of generation a test data stream by the switching hub and testing a plurality of DUTs by using the test data stream. A first port of the switching hub transmits port mirroring to a second port of the switching hub. A packet is transmitted through a physical cable from the first port. The first port and the second port are added to a first virtual local area (VLAN) in a native manner. The second port receives a test packet in a self-loop mode. The test data stream is created by repeatedly transmitting the test packet from the second port. In addition, the present invention further provides a system for stream testing by a switching hub.