What is a usb socket?

What is a usb socket?
The USB socket is a safe and energy-saving universal socket with a USB interface. It is a low-current electronic product. It includes a socket body. A USB socket is provided on the socket body, and a linkage switch is arranged on the USB socket. And a USB socket; a charger module is provided in the socket body, the input end of the charger module is connected in parallel with the output end of the linkage switch, and the positive and negative poles of the output end correspond to the positive and negative poles of the power terminal of the USB socket Connected, the input end of the linkage switch is connected with the power source.