Abstract: A server assembly includes a first server and a second server sharing the cooling provided by one or more fans. The first server is stacked on the second server. The first server includes a first bottom plate having vents, a first side plate having first air inlets, and a first back plate having air outlets. The fans are mounted to the first server. The second server includes a second bottom plate, a second side plate having second air inlets, and a second back plate. The servers are configured to dissipate heat from the first server by air that enters the first server and is expelled out of the air outlets by the fans, and to dissipate heat from the second server by air that enters the second server, enters the first server from the vents, and is expelled out of the air outlets by the fans.

Abstract: An exemplary server monitoring circuit includes a primary control circuit, a secondary control circuit, and an indicating circuit. The primary control circuit and the secondary control circuit are both electronically connected to the indicating circuit, and the primary control circuit is further electronically connected to the secondary control circuit. The primary control circuit has a priority to control the indicating circuit, which avoids the primary control circuit from interfering with the secondary control circuit effectively.

Abstract: A system for protecting a power supply includes a power supply unit (PSU), an integrated baseboard management controller (IBMC), and a platform controller hub (PCH). The IBMC includes a receiving module and a comparison module. When the PSU enters a protection mode and is shut down, but the PCH maintains outputting a power on signal to power on the PSU, the PSU continues outputting a power good signal to the receiving module. The receiving module counts a number of times of receiving the power good signal within a predetermined time period, and outputs the counted number of times. The comparison module compares the counted number of times with a reference value, and outputs a control signal to the PCH when the counted number of times is greater than the reference value. The PCH stops outputting the power on signal to the PSU after receiving the control signal.

Abstract: A mounting apparatus configured for securing a number of peripheral component interconnect (PCI) cards includes a number of positioning members. Each positioning member includes a positioning block positioning a corresponding PCI card, an inserting portion extending away from a first side of the positioning block, and a latching portion extending away from a second side of the positioning block. The inserting portion of each of the positioning members is latched to the latching portion of an adjacent positioning member.

Abstract: A server cabinet includes a cabinet, a fan module, and two fixing members. The cabinet includes a rear panel defining an opening. The fan module includes a bracket. The bracket includes a first receiving portion and a second receiving portion substantially perpendicular to the first receiving portion. The first receiving portion and the second receiving portion each receive a fan. The fan module is pivotably received in the opening. When the first receiving portion is exposed out of the opening, the fan in the first receiving portion dissipates heat from the cabinet. The fixing members prevent the fan module from rotating. When the second receiving portion is exposed out of the opening, the fan in the second receiving portion dissipates heat from the cabinet, and the fixing members prevent the fan module from rotating.

Abstract: An electronic device includes an enclosure, a circuit board arranged in the enclosure, a heat dissipation module set on the circuit board, and a fan arranged in the enclosure and aligned with the heat dissipation module. The heat dissipation module includes a base and a number of fins. A number of parallel receiving portions are formed on the base. A slot is defined in each retaining portion. Each fin includes a main plate and a pivoting portion formed at a bottom the main plate. The pivoting portions are respectively and pivotably received in the slots of the base.

Abstract: A connection assembly includes a connection member and a switch. The connection member includes a serial attached small computer system interface (SAS) connector electronically connected to the switch. When the switch is electronically connect to the motherboard, the switch transmits signals from the motherboard to a hard disk drive backplane via the SAS connector. When the switch is electronically connect to the hard disk drive backplane, the switch transmits signals from the hard disk drive backplane to the motherboard via the SAS connector.

Abstract: A hard disk retaining apparatus includes a main body and an indicating module is installed inside the main body, the indicating module includes a display button, a trigger button, and a display unit. When the hard disk drive is installed into the main body, the hard disk drive contacts the trigger button, pressing the display button, the display unit can display if the hard disk drive is installed into the hard disk retaining apparatus. When the hard disk drive is not installed into the main body, the display unit does not work.

Abstract: A delay circuit for a fan includes a signal generation circuit, a first switch, a delay microchip, and a second switch. The signal generation circuit receives a driving signal and generates a control signal according to the driving signal. The first switch is electronically connected to the signal generation circuit to receive the control signal. The second switch is electronically connected between the delay microchip and the fan. When the signal generation circuit is electronically connected to the fan via the first switch, the control signal is transmitted to the fan to activate the fan. When the signal generation circuit is electronically connected to the delay microchip, the delay microchip receives the control signal and outputs a delayed control signal after a predetermined delay time, and the delayed control signal is transmitted to the fan via the second switch to activate the fan.

Abstract: A motherboard assembly able to use a PCI slot either to expand system function or for the installation of additional memory includes a motherboard and a storage device. The motherboard includes a PCI expansion slot, a platform controller hub (PCH), and a power circuit. The PCI expansion slot includes a protrusion, four idle pins and first signal pins connected to the PCH, and first power pins connected to the power circuit. A control chip, a number of storage chips connected to the control chip, and a power unit are arranged on the storage device. A non-central notch is included in an edge connector arranged on a bottom edge of the storage device and the edge connector allows for power pins connected to the power unit and signal pins connected to the control chip.

Abstract: A protecting circuit for a basic input output system (BIOS) chip of a computer includes a platform controller hub (PCH), an inverting circuit connected to the PCH, a BIOS socket to connect the BIOS chip, and a controlling circuit connected between the inverting circuit and the BIOS socket. The PCH outputs a first signal or a second signal, and a third signal. The inverting circuit outputs an inverted signal with a level contrary to the first or second signal. The controlling circuit receives the first or second signal and the inverted signal, to output a processing signal to the BIOS socket, thereby controlling write-protection states of the BIOS chip.

Abstract: A data storage module includes a carrier, a first hard disk drive, and a second hard disk drive. The carrier includes a bottom plate, a first side plate and a second side plate extending up from two opposite sides of the bottom plate, a top plate extending from a top side of the second side plate toward the first side plate, and a third side plate extending from a distal side of the top plate toward the bottom plate. The first hard drive supported on the bottom plate, and mounted between the first side plate and the second side plate. The second hard disk drive is mounted between the first side plate and the third side plate.

Abstract: A power circuit for different types of fans includes first through sixth terminals, a control chip, first through third loads, and a connector. If a 3-pin fan is connected to the connector, only the first load connects the first and second terminals, and a control pin of the connector is idle. If a 4-pin fan is connected to the connector, the second load connects the third and fourth terminals, the third load connects the fifth and sixth terminals, and the first load does not connect the first and second terminals. The control pin receives a divided voltage to control fan speed.

Abstract: A power supply module includes a sidewall, a socket detachably mounted to the sidewall, and a latch rotatably connected to the sidewall. An opening is defined in the sidewall. The socket includes a base engaging in the opening, and a mounting plate abutting an outer surface of the sidewall. A block is formed on the outer surface of the sidewall adjacent to a side of the opening, to abut a first side of the mounting plate. The latch is capable of being rotated to abut a second side of the mounting plate opposite to the first side.

Abstract: A control circuit includes a power supply, a measurement unit, a control unit, and hard disk drives. The power supply is used to supply power for the hard disk drives. The measurement unit is used to detect a current of the power supply and output a trigger signal if the current of the power supply is greater than a preset current. The control unit is connected between the measurement unit and the hard disk drives. When the control unit receives the trigger signal, the control unit outputs a control signal to control the hard disk drives to start up in a predetermined order.

Abstract: Protective cover for a fan includes a center pole and two protecting members connected to opposite ends of the center pole. Each protecting member includes an outer frame, a plurality of connecting poles connected to the center pole and the outer frame, and a plurality of protecting bars connected to the connecting poles and arranged between the center pole and the outer frame. Each connecting pole defines a plurality of locking holes. The distance from the locking holes of each connecting pole to the center pole is different.

Abstract: An electronic device includes a chassis, an installation board, an expansion card mounted to a bottom surface of the installation board, and a fixing member. The chassis includes a motherboard forming a socket. The expansion card includes a connector engaged in the socket. The fixing member includes a movable portion including a bar. The movable portion is rotated to drive the bar to lift the installation board away from the motherboard, thereby disengaging the connector from the socket.

Abstract: An expansion apparatus includes a shell defining an opening, a baseboard mounted in the shell, and a serial advanced technology attachment dual in-line memory module (SATA DIMM) device. A memory slot, a power converter, a hard disk drive (HDD) signal expander, and a connector exposed through the opening are all arranged on the baseboard. The memory slot includes a protrusion, first power pins connected to the power converter, first ground pins, and first signal pins connected to the HDD signal expander. A control chip and storage chips are all arranged on the SATA DIMM device. An edge connector and a notch are arranged along a bottom edge of the SATA DIMM device to be detachably engaged in the memory slot. The edge connector includes second power pins connected to the control chip and the storage chips, second ground pins, and second signal pins connected to the control chip.

Abstract: A electronic device rear wall includes a wall body defining a slot to accommodate a connector of an expansion card; and a swiveling cover pivotably mounted to the wall body, to cover the slot when not in use, or uncover the slot when required.

Abstract: An audio control system installed on an electronic device includes a switch switching between a first mode and a second mode, a switching module, a microphone, a microphone control module, a speaker, a speaker control module, a signal radiating module, and a signal receiving module. When the switch is switched to the first mode, the switching module controls the microphone control module to transmit audio data of microphone to the signal radiating module to radiate the audio data via a wireless network. When the switch is switched to the second mode, the switching module controls the microphone control module to transmit the audio data of microphone to the speaker to make sound via the speaker control module.