Top search terms
How many wires are inside a USB data cable, and what does each one do?
2022-01-05
There are 4 wires inside a USB data cable — red, white, green, and black. Here's what each one does.
Red wire: Power positive (marked as +5V or VCC on the wiring) White wire: Negative-voltage data line (marked as Data- or USB Port -) Green wire: Positive-voltage data line (marked as Data+ or USB Port +) Black wire: Ground (marked as GROUND or GND)
Of course, the wire colors are only visible once you peel back the outer rubber casing of the data cable or charging cable.