Hon Hai Precision Industry Co., Ltd.

Hong-Fu Jin Precision Industry (Shenzhen) Co., Ltd.

Xian-Kui Chen

Hai-Li Wang

Xiao Su

A computer wake up circuit, for awaking a computer which is in a sleep state via a computer serial port, includes an AT89 series microcontroller, a switching circuit, an input circuit. The switching circuit is coupled to the pins P(INT) and Pof the AT89 series microcontroller, for triggering the AT89 series microcontroller to output an control signal. The input circuit comprises a first resistance, a control switch, a second resistance, and a third resistance. One end of the first resistance is coupled to pin P(TXD) of the AT89 series microcontroller, the other end of the first resistance is coupled to an input end of the control switch. An output end of the control switch is coupled to the second pin of the computer serial port via the second resistance, and is coupled to the third pin of the computer serial port via the third resistance.

Computer wake up circuit

A cable connector includes four first male connectors of a first type, a second male connector of a second type, and four third male connectors of the first type. The first male connectors compose a first input/output terminal. The second male connector and the four third male connectors compose a second input/output terminal. Each first male connector is electrically connected to the second male connector and a corresponding third male connector.

Cable connector for connecting motherboard and hard disk drive

A testing device for testing a board managing controller (BMC) of a computer motherboard including a power supply, a BMC, and a warning unit, includes a storing module, a voltage adjusting module, and a voltage displaying module. The storing module stores a preset warning voltage and an upper limit voltage larger than the preset warning voltage. The voltage adjusting module is used for adjusting the voltage of the power supply. The voltage displaying module is used for displaying the output voltage of the voltage adjusting module. It indicates the BMC works properly if the warning unit provides warning when the output voltage of the voltage adjusting module is less than the preset warning voltage, or the warning unit is silent when the output voltage of the voltage adjusting module falls between the preset warning voltage and the upper limit voltage.

Growing community of inventors

Shenzhen, China

Xian-Kui Chen