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There are many power cords in computers, among which green power cords and gray power cords occupy a relatively important position in computers. In fact, its status is all related to their role. So what is the role of the green power cord and the gray power cord?

　　Green: P-ON (power switch terminal)

　　 The green power cord is mainly used to control the power on of the computer by level. Generally, when the signal level of the port is higher than 1.8 volt-ampere, the main power supply is turned off. On the contrary, when the signal level of the port is less than 1.8 volt-ampere, the main power supply is in the on state, and each power line can be unblocked.

　　The green power cord has a great relationship with the operation of the entire power supply, so it is necessary to learn how to judge the power supply. Generally, people can use a metal wire to short the green port and any black port. If there is no response from the power supply, it means that there is a problem with the power supply and it needs to be solved in time. Of course, people can also wait patiently for a while before proceeding, so that the correctness of the judgment can be ensured and the power supply can be repaired in time.

　　Gray: P-OK (power signal line)

　　 The main function of the gray power cord is to make a comprehensive calculation based on the power supply value of the power supply, thereby obtaining a more reliable value. Through the gray line, you can tell the motherboard power supply status is good or bad. In general, if the output value of the gray line is above 2 volt-ampere, it means that the power supply can be used normally; when its output value is less than 1 volt-ampere, then it means that the power supply cannot guarantee the normal operation of the entire system, so it needs to be timely Replace to ensure the normal use of the computer.

　　 Only if you understand the functions of the green and gray lines, then you can know the situation that the computer is not running, so that you can perform timely maintenance and make the computer run normally.

Article from: http://www.elejintao.com/newsd-nid-62.html