Abstract: An interface supply system includes a switching power supply, a control chip, and a control circuit. The control circuit is coupled to the switching power supply and the control chip. The switching power supply is configured to supply power to an interface. The control circuit is configured to be switched on and output a detection signal to the control chip when the switching power supply and the control chip are shorted. The control chip is configured to not supply power to the interface after receiving the detection signal.

Abstract: An electronic device having an expansion interface includes a shell, a button, a circuit board, switch and a voltage adjusting unit. The shell defines a through hole. The button is movably received in the through hole. The button includes a first electroluminescent portion and a second electroluminescent portion. The switch is electrically connected to the circuit board and is activated by the button to control whether to load a same voltage to the first electroluminescent portion and a second electroluminescent portion to drive them to emit light of equal brightness. The voltage adjusting unit changes the voltage loaded to the second electroluminescent portion to drive the second electroluminescent portion to emit light having a different brightness from the light emitted from the first electroluminescent portion when an expansion device is connected to the expansion interface.

Abstract: A charging circuit includes a power supply chipset, a charging port, and a detecting circuit. The power supply chipset includes an enable pin. A voltage on the enable pin controls the power supply chipset. The charging port includes a detecting pin which detects whether there is an electronic device connected on the charging port. The detecting circuit is connected between the detecting pin and the enable pin. The detecting circuit controls the voltage on the enable pin to cause the power supply chipset to output a charging voltage to the power supply chipset in event an electronic device that requires charging is connected to the charging port.

Abstract: A data storage device securing mechanism is used to secure a data storage device on a board. The data storage device securing mechanism includes a bracket secured on the board, a pivot shaft secured on the bracket, and a latch piece rotatably installed on the pivot shaft. The bracket includes a plurality of sliding grooves. The latch piece includes a latch portion. The data storage device is configured to be slidably installed on the sliding groove. The latch piece is configured to be rotated and be received in the sliding groove. The latch portion is configured to be resisted against the data storage device to secure the data storage device on the bracket.

Abstract: A power control device includes a multiple socket-outlet, a power plug and a power supply control circuit. The control circuit includes a power output unit, a first relay and a second relay, a first capacitor, a mechanical switch, an electronic switch and a connector connected to the host of a computer to receive a first voltage. The mechanical switch is turned on to supply power to the multiple socket-outlet, the first relay is closed, the power output unit outputs a working voltage for charging the first capacitor, the electronic switch is turned on, the second relay is closed. If the connector is turned off, the electronic switch is turned off, and the second relay is turned off so that the the multiple socket-outlet is closed.

Abstract: An electronic device includes a wireless module, a power supply, and a switch module. The wireless module is adapted to receive or send a wireless signal. The power supply is adapted to supply power for the wireless module. The switch module is connected between the wireless module and the power supply, and the switch module includes a first switch and a transistor. A collector terminal of the transistor is coupled to the power supply, the first switch is coupled to the collector terminal and the base terminal of the transistor, and an emitter terminal of the transistor is coupled to the wireless module. The transistor is switched on when the first switch is switched on, and the power supply supplies power for the wireless module. The transistor is switched off when the first switch is switched off, and the power supply is disconnected from the wireless module.

Abstract: A testing apparatus to establish a fault by a process of elimination includes an input unit, a signal converting unit, a switch unit, and a display unit. The input unit receives an input signal and outputs a switch signal. The signal converting unit receives the switch signal and outputs a control signal. The switch unit receives the control signal and outputs a test signal. The display unit receives the test signal and runs a built in self test (BIST) program to test the proper functioning of the display unit. The signal converting unit outputs a data signal and a clock signal to the display unit when the display unit works normally. The signal converting unit not output the data signal and the clock signal to the display unit when the input signal and resulting control signal are repeated.

Abstract: An electronic device includes a motherboard and a display. The motherboard includes a south bridge chip, a leak-proof circuit, and a connector. The leak-proof circuit includes a control unit and a first signal transmission unit. The control unit is electrically coupled to a power supply. The first signal transmission unit includes a first electronic switch, a second electronic switch and a first resistor. The second electronic switch is electrically coupled to ground through the first resistor. When the motherboard is turned off and the display is turned on, the power supply does not provide power to the control unit, and the control unit outputs a first control signal to the first and the second electronic switches. The first and the second electronic switches are in pinch-off mode. Signals from the display flow into ground through the second electronic switch and the first resistor.

Abstract: Router includes an enclosure, a circuit board located in the enclosure, a first expansion module, and a second expansion module. The first expansion module and the second expansion module are selectively coupled to the circuit board. When the first expansion module is coupled to the circuit board, the router is used to build a local area network or a wireless network. When the second expansion module is coupled to the circuit board, the router is used to connect a plurality of electronic devices.

Abstract: The disclosure provides a motherboard including a north bridge chipset, a basic input output system (BIOS), a first video graphics array (VGA) connector, and a controlling module. The north bridge chipset outputs a sleep signal to the controlling module, the controlling module obtains a switch signal from the first VGA connector, the controlling module outputs a first mode signal to the north bridge chipset according to the sleep signal and the switch signal, the north bridge chipset controls the computer host to be asleep according to the sleep mode. The disclosure also provides a computer control system including the motherboard. The motherboard and the computer control system control the computer to be asleep via a display.

Abstract: An indicator light detection system includes a detection module and a processing module. The detection module is configured to sense a color of a first indicator light to receive a first color signal. The detection module is further configured to output a first detection signal corresponding to the first color signal. The processing module includes a resolving unit, a comparison unit, and a display unit. The resolving unit is configured to resolve the first detection signal to a first detection value. The comparison unit is configured to compare the first detection value with a first reference value. The display unit is configured to display information when the first detection value is equal to the first reference value. An indicator light detection method is also provided.

Abstract: A housing of a computer includes a cover, a body, and a locking mechanism. The locking mechanism is mounted on the cover. The locking mechanism includes a handle and a sliding plate. The handle is configured to rotate between a first position and a second position relative to the cover. The handle is configured to push the sliding plate. When the handle is in the first position, the sliding plate is engaged with the cover and the body to fix the cover to the body. When the handle is in the second position, the sliding plate is away from the body and the cover is unlocked from the body.

Abstract: A projector includes a shell, a projection lens, an optical engine module, a power supply module a light source module and a fan. The shell defines an air inlet, an air outlet and forms a first room, a second room and a third room. The first room and the second room communicate with the air inlet. The third room communicates with the air outlet. The projection lens and the optical engine module are positioned in the first room. The power supply module is positioned in the second room. The light source module is positioned in the third room. Heated air in the first room can flows to the second room. Heated air in the second room can flows to the third room. The fan is positioned in the third room to expel heated air from within the shell.

Abstract: A power supply system includes a charge module, a control module, and a discharge module. The charge module includes a charge circuit and a cell assembly. The control module includes a wireless unit. The discharge module includes a voltage increasing circuit coupled to the cell assembly and a voltage decreasing circuit coupled to the voltage increasing circuit. The charge module is coupled to a direct current power supply to charges the cell assembly. The cell assembly outputs a discharge voltage. The voltage increasing circuit is configured to increase the discharge voltage to a reference voltage. The voltage decreasing circuit decreases the increased discharge voltage to charge the wireless unit.

Abstract: A securing mechanism is configured to secure an electronic device. The electronic device includes a body, a power adapter and a first data cable connecting the body with the power adapter. The securing mechanism includes a base and a cover. The base includes a second data cable. The cover defines a limiting groove and a securing portion connected with the second data cable. The body is configured to be received in the limiting groove. The power adapter is configured to be inserted into the securing portion. The second data cable is configured to be inserted into a power supply.

Abstract: A power control system includes a first comparison unit, a second comparison unit, a switching unit, and a power supply unit. The first comparison unit receives a switch voltage and a first reference voltage, compares the switch voltage with the first reference voltage and outputs a first comparison voltage. The second comparison unit receives the first comparison voltage and a second reference voltage, compares the first comparison voltage with the second reference voltage and outputs a second comparison voltage. The switching unit receives the second comparison voltage and converts a power control voltage to the switch voltage. The power supply unit receives the switch voltage and outputs a working voltage to wake up a motherboard. The power supply unit only wakes up the motherboard when the power supply unit is completely discharged.

Abstract: An expansion card securing mechanism is configured to secure different kinds of expansion cards. The expansion card securing mechanism includes a base and a plurality of securing members which are secured on the base. The base includes a latch portion. The latch portion defines a plurality of latch holes, the securing member can be secured in the latch hole. Each securing member defines a cavity, the latch hole and the cavity can receive different kinds of expansion cards to secure the expansion cards.

Abstract: An imaging device includes a main body, a light pipe, a shell, and a lens assembly. The light pipe is attached to the main body. The shell is configured to couple to the main body; thereby an accommodating space is defined between the shell and the main body. The lens assembly has an external sleeve and a lens. The lens is movably coupled to the accommodating space by the external sleeve, thereby enabling adjustment of a distance between the lens and the light pipe.

Abstract: Electronic device includes an enclosure, a motherboard received in the enclosure, a first bracket securing a first electronic module, a transfer card electronically coupled to the motherboard, and a securing member securing the transfer card to the first bracket. The transfer card is substantially perpendicular to the motherboard, the first electronic module is electronically connected to the transferring card, and thereby the motherboard is electronically connected to the first electronic module.