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How many cables are there in the USB data cable? What are their respective functions?

How many cables are there in the USB data cable? What are their respective functions? There are 4 cables in the USB data cable, including red line, white line, green line and black line. Let's understand the specific functions below.

Red wire: positive pole of power supply (the mark on the wiring is + 5V or VCC)

White line: negative voltage data line (identified as data - or USB port -)

Green line: positive voltage data line (marked as data + or USB port +)

Black wire: grounding (marked as: ground or GND).

Of course, the color of the wire can only be seen when peeling off the outer rubber of the data line or charging line.


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