Abstract: A power management system is disposed in a computer. The power management system includes a current detecting module and a chipset. The current detecting module is disposed between the power receiving end of an external device and the power cord of the power source of the computer for detecting the current sink by the external device and accordingly outputting a current detecting signal. The chipset adjusts the operating voltage or operating frequency of the external device according to the current detecting signal.

Abstract: A system for compensating the characteristics of a fan, applied to a heat-dissipating fan of an electronic device. This system comprises of an analyzing module for analyzing the relation between the duty ratio of pulse width modulation (PWM) and the rotational speed of the fan to generate analyzing data, and a compensating module for generating compensating data basing on the analyzing data and a specific proportion relation between the temperature and the duty ratio of PWM.

Abstract: A connector including an insulating housing, a plurality of signal terminals, and at least a metal fixing element is provided. The signal terminals are disposed in the insulating housing, wherein a portion of each signal terminal is protruding out from the insulating housing. The metal fixing element has an inserting part and a fixing part connected to the inserting part. The inserting part is inserted in the insulating housing, and the fixing part is protruding out from the insulating housing at a same side with the signal terminals. The connector is suitable for welding on a circuit board through the fixing part.

Abstract: An integrated connecting port module is suitable for an adapter having one terminal which is a High Definition Multimedia Interface (HDMI) adapting port and the other terminal which is a Digital Visual Interface (DVI) adapting port. The integrated connecting port module includes a case, an HDMI port and at least one expansion port. The case has a width not smaller than that of the DVI adapting port. The HDMI port and the expansion port are installed on the case and are stacked. An electronic device including the integrated connecting port module is also disclosed.