Question Сonnector for charging

Sep 27, 2022
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Hello all! I have a laptop HP, I need to understand what is the connector for charging, where can I see it? There is nothing marked on the laptop itself. As far as I understand they come in several kinds (HP pavilion g6, dv6, dv7, 15, 17 and others. With a round plug and a needle in the center) but how to understand which one I have?
I would appreciate your help!
 
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