HP laptop commonly use and very often find laptop and its circuit is very basic similarities with other models. So I explained it's main power source (B+)section First. it is Operate with hp’s 3 pin adapter architecture. It is very often used in others companies like dell, lenovo etc. It protect system with external over voltage and surge. When there is damage in circuit it stop output from adaptor. ID signal is use to operate charging Enable function.
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