Abstract: A memory clock frequency adjusting method suitable for a computer device is provided. The computer device includes a basic input output system (BIOS) and a memory. The memory clock frequency adjusting method includes following steps. A boot process of the computer device is executed, and the memory is operated at a memory clock frequency set by the BIOS. Whether the computer device is successfully booted is determined by the BIOS to decide whether the boot process of the computer device is to be re-executed. A setting of the memory clock frequency is adjusted by the BIOS when the computer device re-executes the boot process to lower the memory clock frequency, so that the memory is operated at the lowered memory clock frequency. In addition, a mainboard and a computer operating system applying the memory clock frequency adjusting method are also provided.

Abstract: A heat dissipation device is adapted to be disposed on a primary heat source and a secondary heat source. The heat dissipation device includes a water cooling head module and a heat conducting member. The water cooling head module is disposed on the primary heat source. The heat conducting member is thermally coupled to the secondary heat source and extends into the water cooling head module.

Abstract: A circuit board heat dissipation assembly includes a circuit board, a heat sink, a metal back plate, a heat pipe, and a pressing member. The circuit board has a front side and a rear side, and the front side has at least one heat generating area. The heat sink is disposed in the heat generating area. The metal back plate is disposed at a spacing from the rear side of the circuit board. The heat pipe has a first end, a bend segment, and a second end. The first end is connected to the heat sink. The second end is in contact with the metal back plate. The bend segment connects the first end and the second end at a side edge of the circuit board. The pressing member is fixed on the metal back plate and presses the second end onto the metal back plate.

Abstract: A motherboard module is adapted for an M.2 expansion card to configure. The M.2 expansion card includes a connecting end and a fixing end. An edge of the fixing end has a semi-circular hole. The motherboard module includes a motherboard body, a locking member, and an abutting member. The motherboard body includes an expansion card slot, a first fixing hole, and a second fixing hole. The locking member is detachably fixed in the first fixing hole. The abutting member has a first end and a second end. The first end is detachably fixed in the second fixing hole. When the M.2 expansion card is installed on the motherboard module, the abutting member is located between the M.2 expansion card and the motherboard body, and the second end abuts against the M.2 expansion card. An electronic device is further provided.

Abstract: A server chassis including a main casing, a support, a hard disk bracket and a retractable engaging member is provided. The main casing includes a lateral plate. The support is fixed to the lateral plate and has an assembling channel and an engaging slot at an end of the assembling channel. The hard disk bracket is detachably disposed at the support and has a first surface towards the support. The retractable engaging member is disposed at the hard disk bracket and has a first base, an engaging portion movably disposed at the first base, a button linked to the engaging portion and a first elastic member located between the button and the engaging portion. The engaging portion is retractably protruded from the first surface of the hard disk bracket and adapted to move in or out of the engaging slot along an edge of the assembling channel of the support.

Abstract: A lighting memory device and a memory module are provided. A lighting control circuit receives at least one lighting mode selection signal through lighting mode control pins and controls luminous characteristics of a plurality of light sources according to a lighting control mode corresponding to the lighting mode selection signal.

Abstract: A motherboard is capable of outputting image data and includes an image transmission port, an on-board video graphics array (VGA) card, a switching circuit, a control circuit, and a first network connection port. The image transmission port is configured to receive an external image signal. The on-board VGA card is configured to provide an internal image signal. The switching circuit selectively uses the external image signal or the internal image signal as image data. The control circuit selectively uses the image data or Ethernet network data as output data. The first network connection port is configured to transmit the output data.

Abstract: A method for system power management includes steps of detecting power output of plural power-supplying units (PSUs) and power consumption of plural computing node, so as to indirectly obtain real-time auxiliary power consumption of an auxiliary unit and continuously update maximum auxiliary power consumption; when one of the PSUs is malfunctioned, renewing the maximum sum of the power output of the other PSUs, and applying the difference of the renewed maximum sum of the power outputs and the maximum auxiliary power consumption as a first sum of the node power consumptions of the computing nodes; finally, according to the first sum of the node power consumptions, cutting down the power consumption of at least one of the computing nodes to a first node power consumption.

Abstract: A solid-state drive and a performance optimization method for the solid-state drive are provided. The performance optimization method for the solid-state drive includes the following steps: detecting a queue depth of the solid-state drive to determine a use proportion of the queue depth; determining whether an access speed of the solid-state drive is raisable when the use proportion of the queue depth is higher than a first threshold proportion, so as to raise the access speed of the solid-state drive; and determining whether the access speed of the solid-state drive is reduceable when the use proportion of the queue depth is lower than a second threshold proportion, so as to reduce the access speed of the solid-state drive.

Abstract: A display device capable of automatically adjusting displayed image comprises a display device, a camera assembly, an image recognition device and a signal processor. The display device including a shell and a display panel partially exposed from the shell, wherein the display panel faces a first direction. The camera assembly obtains a first image with a first visual angle and obtain a second image with a second visual angle. The image recognition device generates a first instruction when the first image meets a first condition and generates a second instruction when the second image meets a second condition. The signal processor adjusts the display signal to conceal the displayed image according to the first instruction and to adjust the display signal to generate a reminder message on the displayed image according to the second instruction.

Abstract: A pen-shaped folding mouse includes a scroll wheel, two supporting shafts, two rod bodies, two buttons, and an optical sensor. The scroll wheel has an axis line. The two supporting shafts are disposed on two opposite sides of the scroll wheel and are parallel to the axis line. The two rod bodies are located on the two opposite sides of the scroll wheel and are movably disposed on the two supporting shafts. The two rod bodies include two outer surfaces and two first end surfaces close to each other. The two buttons are disposed on the two outer surfaces of the two rod bodies. The optical sensor is located on the outer surface of one of the rod bodies.

Abstract: A fan expansion card includes a first circuit board and at least one first fan. The first circuit board has at least one through-hole. The first circuit board includes a first connection port having a PCI-E interface. Each of the first fans is disposed at a position on the first circuit board corresponding to the through-hole. The first fan is electrically connected to the first circuit board, wherein an airflow generated by each of the first fans passes through the corresponding through-hole. A motherboard module having the above fan expansion card is further provided.

Abstract: An air conditioner energy-saving inflatable device is adapted to be disposed in a vehicle body. The air conditioner energy-saving inflatable device includes an air pump, an air bag, a circuit board and a sensor. The air bag is connected to the air pump and adapted to be disposed beside an area in the vehicle body. The circuit board is electrically connected to the air pump and includes a controller. When an air-conditioning system of the vehicle body is activated, the sensor is adapted to sense whether the area is vacant. When the sensor senses that the area is vacant, the controller instructs the air pump to inflate the air bag, so that the air bag fills at least a portion of the area. When the air-conditioning system of the vehicle body stops running, the air bag is deflated. A vehicle is also provided.

Abstract: A video taking device comprises a video camera, an auxiliary controller and a main controller, wherein the video camera is electrically connected with the auxiliary controller and the main controller and the auxiliary controller is electrically connected with the main controller. The video camera is configured to film to generate a video stream. The auxiliary controller is configured to determine whether there is a target existing in the video stream, and to generate a switch instruction when the target exists in the video stream. The main controller is configured to switch into a first operation mode from a first standby mode and instruct the auxiliary controller to be in a second standby mode when receiving the switch instruction, and to obtain the video stream from the video camera for recognizing appearance of the target.

Abstract: A memory socket protecting cover adapted to be assembled to a memory socket which is adapted for a memory module to insert is provided. The memory module includes a fool-proof concave, and includes a fool-proof member corresponding to the fool-proof concave. The memory socket protecting cover includes two lateral walls and a wear-resistant member. The two lateral walls are adapted to be disposed at two sides of the memory socket. The wear-resistant member is connected to the two lateral walls and adapted to be disposed on the fool-proof member. A width of the wear-resistant member is greater than or equal to a width of the fool-proof member and is smaller than a width of the fool-proof concave. When the memory module is inserted in or pulled from the memory socket, a wall of the memory module besides the fool-proof concave is adapted to contact the wear-resistant member.

Abstract: A heat dissipation assembly includes a case and a partition structure. The case has a chamber. The partition structure includes a partition wall vertically disposed in the chamber to separate a first flow path and a second flow path in the chamber, and the partition wall has a breach and a valve structure disposed at the breach, wherein the valve structure covers the breach when the valve structure is not pushed open. When a fluid pressure existed in a section of one of the first flow path and the second flow path which is adjacent to the valve structure is greater than a fluid pressure existed in a section of the other one of the first flow path and the second flow path which is adjacent to the valve structure, the valve structure is pushed away to expose at least a part of the breach.

Abstract: A pen-shaped folding mouse includes a scroll wheel, two supporting shafts, two rod bodies, two buttons, and an optical sensor. The scroll wheel has an axis line. The two supporting shafts are disposed on two opposite sides of the scroll wheel and are parallel to the axis line. The two rod bodies are located on the two opposite sides of the scroll wheel and are movably disposed on the two supporting shafts. The two rod bodies include two outer surfaces and two first end surfaces close to each other. The two buttons are disposed on the two outer surfaces of the two rod bodies. The optical sensor is located on the outer surface of one of the rod bodies.

Abstract: A power regulator is applied to regulate a work frequency of a central processing unit and the power regulator comprises a power resister, a voltage amplifier and an analog-to-digital converter. The power resister is coupled to a load to generate a first voltage. The voltage amplifier is coupled to the power resister to output a second voltage. The analog-to-digital converter is coupled to the voltage amplifier, converts the second voltage into a control signal and transmits the control signal to the central processing unit. The control signal is switched between a first level and a second level according to a value of the second voltage.

Abstract: A facial recognition method comprises obtaining an image to be recognized, determining whether the image to be recognized belongs to one of image groups of at least one user, determining whether an image number of a determined image group is less than a preset number when the image to be recognized belongs to the determined image group in the image groups, deleting one of facial images in the determined image group according to time parameters of the facial images in the determined image group and performing an image group updating procedure when the image number of the determined image group is not less than the preset number, and performing the image group updating procedure when the image number of the determined image group is less than the preset number.

Abstract: A serial transmission fan control device comprises a master controller, a first fan controller, and a second controller. The master controller generates a serial control data, wherein the serial control data comprises a plurality of packets concatenated in an order and each of the plurality of packets comprises a control parameter set of a fan. The first fan controller electrically connects to the master controller, receives the serial control data, extracts a packet from the plurality of packets of the serial control data, and sends a first downlink serial data, wherein the first downlink data comprises all of the plurality of packets of the serial control data except for the extracted packet. The second fan controller electrically connects to the first fan controller, receives the first downlink serial data, and extracts a packet from the packets of the first downlink serial data.