Abstract: A connecting device includes a connector and a jumper. The connector includes an enclosure and two terminals mounted in the enclosure. The two terminals are spaced apart. Each terminal includes a contact defining a latching hole. The jumper includes a case and a conductor received in the case. The conductor includes two contacting arms. Each contacting arm includes a latching portion. Each contact extends into the case, each latching portion is engaged in one of the two latching holes to mount the jumper to the connector, and the two terminals are electronically coupled to each other.

Abstract: Electronic device assembly includes a first electronic device and a second electronic device moveably received in the first electronic device. The first electronic device includes a controller. The second electronic device includes a connecting module. When the second electronic device is received in the first electronic device, the connecting module is connected to the controller; thereby the controller is configured to control the second electronic device to display on the first electronic device.

Abstract: An all-in-one computer includes a shell, a stand, and a plate. The stand and the plate are engaged with the shell. The stand includes at least one first supporting pole and a second supporting pole. The second supporting pole is configured to move relative to the at least one first supporting pole. The plate defines a plurality of grooves. An extending direction of the plurality of grooves is substantially parallel to each other. An end of the second supporting pole can engage with one of the plurality of grooves to support the shell.

Abstract: Electronic device includes a host and a base supporting the host. The base includes a base body and a protecting member. A receiving portion is located on the base body, and a bracket is received in the receiving portion. The bracket is used to receive a disk drive, and the protecting member is secured to the base body and covers the bracket in the receiving portion.

Abstract: A mounting structure in a power supply chassis includes a mounting portion and a securing portion. The mounting portion is located on a first sidewall of the power supply chassis. The mounting portion includes a first protruding plate for supporting a circuit board, a second protruding plate parallel to the first protruding plate, and a positioning portion to receive the circuit board. The positioning portion is located between the first protruding plate and the second protruding plate. The securing portion includes a resilient portion extending into the positioning portion. When the circuit board is installed in the power supply chassis, the circuit board is received in the positioning portion and supported by the first protruding plate, with the resilient portion engaged in a securing hole defined in the circuit board.

Abstract: A fan rotational speed adjusting system includes a power supply unit, a fan, a current detecting circuit and a temperature detecting circuit. The current detecting circuit detects a first DC voltage from the power supply unit, compares the first DC voltage with a first reference voltage, and outputs a first adjusting voltage. The temperature detecting circuit detects a temperature change of the power supply unit, and outputs a second adjusting voltage. The temperature detecting circuit receives the first adjusting voltage, compares the first adjusting voltage and the second adjusting voltage with a second reference voltage, and outputs a third DC voltage to the fan. The fan rotates in the corresponding rotational speed, and dissipates heat for the power supply unit.

Abstract: A securing structure includes a base, a support member, a linking member, and a lock. The support member pivots and attaches to the base. The linking member pivots and is coupled to the support member and is slidably coupled to the base. The support member is configured to position in an original position, received in the base or in a working position, extending from the base. The linking member is configured to support the support member located in the working position. The lock is slidably attached to the support member. When the support member is positioned in the working position, the lock is configured to secure an object.

Abstract: A mounting system includes a case, a holding plate, and two resilient members. The case includes a bottom plate and two side plates extending from the bottom plate. The holding plate is mounted in the case above the bottom plate and configured to hold the hard disk drive. Each resilient member has a first end secured to the case and a second end secured to the holding plate. Each side plate defines a latching slot. The holding plate is movable relative to the case to elastically deform the resilient members, and the latching slot is configured for a mounting post located on the hard disk drive to move along when the holding plate is moved.

Abstract: A rack-stop structure of a frame and a door includes a bracket, a bar, and a pull spring. A positioning slideway and an escaping slideway are defined in the bracket. A plurality of positioning portions and a plurality of escaping tabs are located on the positioning slideway. Each of the plurality of positioning portions is spaced by each of the plurality of escaping tabs. An engaging cutout is defined in each of the plurality of positioning portions. One end of the bar is slidable in the bracket. A pin is located at the end of the bar. The pull spring is mounted to the bar for pulling the bar away from the bracket.

Abstract: A buffering device includes a cylindrical casing and a piston module movably mounted in the cylindrical casing. The cylindrical casing includes a base plate and a shielding piece pivotally attached to the base plate. An air inlet and an air outlet are defined in the base plate. A diameter of the air inlet is greater than that of the air outlet. When the piston module is moving towards the base plate, the shielding piece is rotated to a closed position to shield the air inlet by air pressure above the shielding piece. When the piston module is moving away from the base plate, the shielding piece is rotated to an open position to expose the air inlet by environmental air pressure.

Abstract: A power supply includes a circuit board, a cable assembly, a voltage conversion component, and a DC voltage conversion component. The circuit board includes a connector. The cable assembly, the voltage conversion component, and the DC voltage conversion component are electrically connected to the circuit board. The cable assembly includes an external connector configured to connect to a peripheral circuit. The voltage conversion component can convert an AC voltage to a first DC voltage. The DC voltage conversion component can convert the first DC voltage to a second DC voltage. The power supply further includes a DC voltage conversion card to convert the second DC voltage to a third DC voltage. The cable assembly outputs the third DC voltage when the DC voltage conversion card is engaged with the connector, and the cable assembly outputs the second DC voltage when the DC voltage conversion card is disengaged from the connector.

Abstract: A fan rotational speed adjusting system includes a power supply unit, a fan, a current detecting circuit and a temperature detecting circuit. The current detecting circuit detects a first DC voltage from the power supply unit, compares the first DC voltage with a first reference voltage, and outputs a first adjusting voltage. The temperature detecting circuit detects a temperature change of the power supply unit, and outputs a second adjusting voltage. The temperature detecting circuit receives the first adjusting voltage, compares the first adjusting voltage and the second adjusting voltage with a second reference voltage, and outputs a third DC voltage to the fan. The fan rotates in the corresponding rotational speed, and dissipates heat for the power supply unit.

Abstract: A chassis assembly to hold multiple expansion cards includes a chassis and an expansion card combination. The chassis includes a back plate and a side plate. The back plate is perpendicular to the side plate. The expansion card combination includes a bracket. The bracket includes a holding plate and a fixing plate. The holding plate is perpendicular to the fixing plate. The fixing plate includes a fastening piece. The side plate includes an opening. The back plate includes a latching hole. The holding plate is held in the opening to prevent the expansion card combination from moving in the direction perpendicular to the back plate. The buckle and the latching hole are latched to prevent the expansion card combination from moving in the direction perpendicular to the side plate.

Abstract: A mounting structure in a power supply chassis includes a mounting portion and a securing portion. The mounting portion is located on a first sidewall of the power supply chassis. The mounting portion includes a first protruding plate for supporting a circuit board, a second protruding plate parallel to the first protruding plate, and a positioning portion to receive the circuit board. The positioning portion is located between the first protruding plate and the second protruding plate. The securing portion includes a resilient portion extending into the positioning portion. When the circuit board is installed in the power supply chassis, the circuit board is received in the positioning portion and supported by the first protruding plate, with the resilient portion engaged in a securing hole defined in the circuit board.

Abstract: A connector includes a connecting interface and a connection piece. The connecting interface defines a socket for receiving a plug and includes a shell surrounding the socket. The shell defines a recess on an external surface of the shell. The connection piece is attached to the shell and is movable from a first position where the at least one connection piece is wholly received in the at least one recess to a second position where a part of the at least one connection piece is extended out of the at least one recess. The part of the at least one connection piece is configured to be received in a part of another recess of another connector to attach the connector to the other connector.

Abstract: A button device includes a circuit board, a switch secured to the circuit board, a button, and a resilient member. The button includes a main body. The main body includes a pressing portion and an extending portion extending from the pressing portion. A resisting portion extends from the pressing portion and abuts the extending portion. A gap is defined between the resisting portion and the circuit board, and a resilient member is attached to the resisting portion. The button is moveable along a direction that is substantially perpendicular to the circuit board to deform the resilient member, and the resisting portion is pressed against the circuit board for preventing the button from further moving along the direction.

Abstract: A heat exchanging system is disclosed. The heat exchanging system includes an evaporator configured for cooling an electronic device, a heater configured for heating an electronic device, and a fan located between the evaporator and the heater. When the evaporator is operated to cool air, the heater is stopped, and the cooled air flows in the electronic device under an action of the fan to cool the electronic device. When the heater is operated to heat air, the evaporator is stopped, and the heated air flows in the electronic device under the action of the fan to heat the electronic device.

Abstract: An analyzing system includes a retrieving module, a filtering module, an extracting module, a display module, and a storing module. The retrieving module is used to retrieve a data package. The filtering module is used to filter a power data parameter from the data package. The extracting module is used to extract a power data parameter value from the power data parameter. The display module is used to display the power data parameter value. The storing module is used to store the power data parameter value. The disclosure further offers an analyzing method.

Abstract: A buffering device includes a cylindrical casing and a piston module movably mounted in the cylindrical casing. The cylindrical casing includes a base plate and a shielding piece pivotally attached to the base plate. An air inlet and an air outlet are defined in the base plate. A diameter of the air inlet is greater than that of the air outlet. When the piston module is moving towards the base plate, the shielding piece is rotated to a closed position to shield the air inlet by air pressure above the shielding piece. When the piston module is moving away from the base plate, the shielding piece is rotated to an open position to expose the air inlet by environmental air pressure.

Abstract: A rack-stop structure of a frame and a door includes a bracket, a bar, and a pull spring. A positioning slideway and an escaping slideway are defined in the bracket. A plurality of positioning portions and a plurality of escaping tabs are located on the positioning slideway. Each of the plurality of positioning portions is spaced by each of the plurality of escaping tabs. An engaging cutout is defined in each of the plurality of positioning portions. One end of the bar is slidable in the bracket. A pin is located at the end of the bar. The pull spring is mounted to the bar for pulling the bar away from the bracket.