What is the round hole power interface called?

The round hole power interface is the power adapter of the laptop; but it should be noted that it cannot be configured according to the shape of the socket, because the DC voltage of different models of laptops is different, and if you make a mistake, it will damage the machine; simple The best way is to take your laptop to an electrical appliance store and the seller will configure it for you based on the computer model.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

What is the round hole power interface called?

is the power adapter for laptop computers.

Cannot be configured according to the shape of the socket, because the DC voltage of different models of laptops is different. If you make a mistake, the machine will be damaged.

The simple way is to take your laptop to an electrical appliance store and the seller will configure it for you based on the computer model.

If you are shopping online, you need to know the nameplate of the computer. The nameplate is usually on the back of the computer, as shown below.

The first line is the brand;

The second line is the model;

The third line is the electrical parameters of the power adapter (rated voltage and maximum output current)

Write keywords based on the first two lines and search on Baidu. After finding the relevant search results, use the voltage and current values ​​in the third line to check whether they are accurate.

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