USB data cable is used for connection and communication between computer and external devices. Among them, red, white, green and black are standard wiring colors, corresponding to power, data, data and power respectively. The general arrangement is red, white, green and black, from left to right.

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

Red - USB power supply, white - USB data cable (negative), green - USB data cable (positive), black - ground wire.

USB data cable is used for connection and communication between computer and external devices. In layman's terms, it is used for data transmission and charging. Red, white, green, and black are the standard wiring colors, corresponding to pins 1, 2, 3, and 4 respectively. The four wires are 1-power 2-data 3-data 4-power. The general arrangement is: red, white, green and black from left to right.

USB is a commonly used PC interface with only 4 wires, two for power and two for signals. It should be noted that do not reverse the positive and negative poles, otherwise the USB device or computer will be burned. Southbridge chip!

Extended information:

USB is the abbreviation of English UniversalSerialBus (Universal Serial Bus) and is an external bus standard. Used to standardize the connection and communication between computers and external devices. It is an interface technology applied in the PC field. The USB interface supports plug-and-play and hot-swappable functions of the device. USB was jointly proposed by Intel, Compaq, IBM, Microsoft and other companies at the end of 1994.

USB supports four basic data transfer modes: control transfer, isochronous transfer, interrupt transfer and data block transfer. Each transmission mode has different properties when applied to terminals with the same name.

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