Abstract: The fan control circuit includes a first switch unit, a second switch unit, and a delay unit. The first switch unit outputs a first or a second voltage according to a power good signal. The delay switch unit performs a delay operation on the power good signal, and outputs different control signals to the second switch unit before or after the delay operation exceeds a predetermined time. The second switch unit receives the control signals from the delay unit, and connects or disconnects the first switch unit to or from a fan according to the control signals.

Abstract: A test card includes a power interface, a controller, a test interface, and a test point. The test interface includes a power pin, a start pin, and a data signal pin. The power interface is connected to the controller and the power pin, and also connected to an external power to receive a work voltage. The controller transmits a turn-on signal to the start pin. The test point is connected to the data signal pin. When an interface of a motherboard is connected to the test interface, the power pin, the start pin, and the data signal pin are connected to corresponding pins of the interface of the motherboard. The motherboard outputs a data signal to the test point through the motherboard interface and the test interface after the controller receives the turn-on signal.

Abstract: A voltage detection system for a number of memory slots includes a platform controller hub (PCH) chip and an integrated baseboard management controller (iBMC) chip. The PCH chip obtains a type of an actual voltage of each memory slot, and outputs a corresponding control signal to the iBMC chip. The iBMC chip obtains the type of the actual voltage of each memory slot according to the corresponding control signal, and diagnoses the memory set with the type of actual voltage type of the corresponding memory set.

Abstract: A serial advanced technology attachment dual in-line memory module device includes a capacitor to be tested, a control chip, a display device, a testing chip, and a selecting chip. Voltage pins of the testing chip and the selecting chip are connected to a power source. A testing pin of the testing chip is connected to the capacitor. A first input output (I/O) pin of the selecting chip is connected to a first I/O pin of the testing chip. A second I/O pin of the selecting chip is connected to a second I/O pin of the testing chip. A third I/O pin of the selecting chip is connected to an input pin of the control chip. A fourth I/O pin of the selecting chip is connected to an output pin of the control chip. A fifth I/O pin of the selecting chip is connected to the display device.

Abstract: A switch circuit is connected to a serial advanced technology attachment (SATA) connector on a motherboard. The switch circuit includes a switch unit. The switch unit connects a last pin of the SATA connector to either a power supply on the motherboard or a ground pin of the motherboard.

Abstract: A solid state disk assembly includes a solid state disk, a first heat conducting member and a second heat conducting member. The solid state disk includes a printed circuit board (PCB) and a chipset. The PCB includes a front surface, a rear surface, a first end, and a second end. The chipset is mounted on the front surface. The first heat conducting member abuts the chipset for absorbing heat generated by the solid state disk and includes at least a pair of elastic arms. The second heat conducting member attaches on the rear surface and includes at least a pair of engaging arms spatially corresponding to the at least one pair of elastic arms. The first end and the second end are clamped between the at least one pair of elastic arms. Each elastic arm engages with a respective one of the engaging arms.

Abstract: An electronic mouse includes a main body. A left button, a right button, and a middle button are arranged on the main body. A control unit switches functions of the left button and the right button when a pressing time of the middle button is pressed for more than a predetermined time, thereby the control unit switches functions of the left button and the right button of the electronic mouse.

Abstract: A fan control circuit of a computer includes a fan interface connected to a connector of a fan, a fan controller, a NOT gate, and an electronic switch. The fan controller outputs a PWM signal to the fan interface to control the operation of the fan, and includes a GPIO interface to output a voltage control signal to the NOT gate to switch the electronic switch on or off. A signal output of the electronic switch is connected to the fan interface. The voltage control signal is high level at the start up moment of the computer, and thus does not turn on the fan via the electronic switch. After a preset delay period, the voltage control signal is turned low by the fan controller so that the fan interface receives the PWM signal.

Abstract: A serial advanced technology attachment dual-in-line memory module (SATA DIMM) assembly includes a SATA DIMM module with a first circuit board, an expansion slot, and an expansion card with a second circuit board. A first edge connector is arranged on a bottom edge of the first circuit board and includes first power pins connected to a control chip and first storage chips, and first ground pins. A second edge connector is arranged on a top edge of the second circuit board and includes second power pins connected to a power unit, and second ground pins. A third edge connector is arranged on a bottom edge of the second circuit board and includes third power pins connected to the power unit, third ground pins, and signal pins connected to a display unit.

Abstract: A motherboard includes a processor, a platform controller hub (PCH), a switch, a power connector, a switch unit, and an expansion slot. The PCH is connected to the expansion slot to output a bus signal to a serial advanced technology attachment dual in-line memory module (SATA DIMM), which is connected to the expansion slot, in response to the movement of a switch. The processor connected to the processor socket outputs a bus signal to an expansion card, which is connected to the expansion slot, in response to another movement of the switch.

Abstract: A serial advanced technology attachment dual-in-line memory module (SATA DIMM) assembly includes a SATA DIMM module with a first circuit board, an expansion slot, and an expansion card with a second circuit board. A first edge connector is arranged on a bottom edge of the first circuit board and includes first power pins connected to a control chip and first storage chips, and first ground pins. A second edge connector connected to the expansion slot is arranged on a top edge of the first circuit board and includes second power pins connected to the first power pins, second ground pins, and four first signal pins connected to the control chip. A third edge connector engaged in the expansion slot is arranged on a bottom edge of the second circuit board and includes third power pins and four second signal pins connected to the second storage chips, and third ground pins.

Abstract: A test circuit includes a power circuit module arranged on a motherboard of a computer and electrically coupled to first and second idle pins of a memory slot, and an indication module including a number of branch circuits. The indication module is arranged on a memory module. When the memory module is arranged in the memory slot properly, third idle pins of an edge connector of the memory module are electrically coupled to the first idle pins of the memory slot, respectively; and fourth idle pins of the edge connector of the memory module are electrically coupled to the second idle pins of the memory slot, respectively.

Abstract: A scanner device transmits scanned image data to a predetermined computer having a local area network transmit tool via a local area network. The scanner device includes a scanning module, a storage module, a determination module, and a control module. The scanning module scans a document waiting to be scanned to form an image data. The storage module stores the image data. The determination module determines an IP address of the predetermined computer. The control module transmits the image data to the predetermined computer via the local area network transmit tool based on the IP address of the predetermined computer.

Abstract: A serial advanced technology attachment dual-in-line memory module (SATA DIMM) device assembly includes an interface, a cable, and a board. An edge connector is set on a bottom edge of the board, and a control chip and a connector are arranged on the board. The connector includes a first shell and a number of first pins. The first pins include signal pins connected to the control chip, and ground pins. The interface includes a second shell and a connecting portion extended from a bottom of the second shell. A number of second pins are arranged on the connecting portion. The cable is extended through a side of the second shell to be connected to the first pins. A distance between a top of the first shell and a top of the board is greater than a height of the second shell.

Abstract: A protection circuit includes a switch circuit, a sample circuit, a comparison circuit, and a relay circuit. The switch circuit is connected between a hard disk power supply and a hard disk to control whether to output power from the hard disk power supply to the hard disk. The sample circuit samples the voltage being supplied to the hard disk, the comparison circuit receives the sampled voltage, compares the sampled voltage to a reference voltage, and controls the switch circuit to be turned on or off accordingly. The relay circuit is connected between a system power supply and an enable terminal of the comparison circuit. The relay circuit outputs a high level signal to turn on the switch circuit when the system power supply is being supplied and the hard disk power supply is not being supplied to the hard disk.

Abstract: A motherboard assembly includes a motherboard and an expansion card. The motherboard includes an expansion slot, a hard disk drive (HDD) controller, a power connector, and a central processing unit (CPU). The expansion slot includes a protrusion, idle pins connected to the HDD controller, power pins connected to the power connector, signal pins connected to the CPU. The expansion card includes a circuit board. A storage unit, a display unit, and a power circuit connected to the storage unit and the display unit are all arranged on the circuit board. A notch is defined in a bottom side of the circuit board, to receive the protrusion. An edge connector is arranged on a bottom side of the circuit board and includes control signal pins connected to the storage unit, power pins connected to the power circuit, and bus signal pins connected to the display unit.

Abstract: A motherboard test device includes a motherboard and a connection module. The motherboard includes a basic input output system (BIOS) chip, a complex programmable logic device (CPLD) chip, and a motherboard connector. The connection module includes a test connector connected to the motherboard connector, a first port connected to random access memory (RAM) of the BIOS chip, and a second port connected to the CPLD chip. A RAM simulator updates or tests BIOS programs stored in the RAM by connecting to the first port. A personal computer (PC) can electronically communicate with the CPLD chip by connecting a parallel interface of the PC to the second port.

Abstract: A cable holder includes a first holding unit, a second holding unit, and a fixing unit. The second holding unit hinges on the first holding unit to form an enclosed receiving space for receiving a cable. The fixing unit is connected to the first holding unit or the second holding unit to fix the cable holder on a casing. The first holding unit and the second holding unit are magnetic. The cable holder is utilized to hold and fix the cable stably on a casing.

Abstract: A power supply device used to provide electric power to a number of servers includes a first power supply and a selection circuit. The selection circuit includes a number of NOT gates, a number of controllers, and a number of transistors. An input terminal of each NOT gate is electrically connected to one of the corresponding servers. Each controller is electrically connected an output terminal of one corresponding NOT gate. A gate of each transistor is electrically connected to one of the corresponding controller, a drain of each transistor is electrically connected to the first power supply, and a source of each transistor is electrically connected to one of the corresponding server. Wherein when some of the server is powered on, the powered on servers generate power on signals which are transmitted to the corresponding controllers, the controllers generates corresponding turn on signals to turn on the corresponding transistors.

Abstract: An exemplary Peripheral Component Interconnect Express (PCIE) interface card is electrically coupled to a CPU. The PCIE interface card includes a circuit board, a first PCIE interface module arranged on the circuit board, at least one second PCIE interface module arranged on the circuit board, and a PCIE switch arranged on the circuit board. The PCIE switch is electrically coupled to the first PCIE interface module and the at least one second PCIE interface module. The PCIE switch transmits data from the CPU to the first PCIE interface module, and exchanges data between the CPU and the at least one second PCIE interface module.