Interface Definition For USB Cable
USB cable is used to connect and communicate with external devices, and can also be used for mobile phone charging and external connection. In layman's parlance, it is used for transmitting data and charging.
Red White green Black is the standard wiring color, corresponding 1, 2, 3, 4 pins respectively.
Four lines are 1-Power 2-Data 3-Data 4-power supply.
The general arrangement is: Red white green Black from left to right.
USB is a commonly used PC interface, only 4 lines, two power supply two signals, it is necessary to pay attention to the positive and negative is not reversed, or will burn out USB devices or computers of the South Bridge chip.