I don't know if you have a question? When you buy a mobile phone, it will be equipped with a data cable by default, which can transmit data and charge, so many of us think that the charging cable is the data cable, but it is not. The following Guanhang electronic Xiaobian will give you a professional analysis.

Do you think that the charging line is basically the same as the shape of the usb data line. Is this often the case? Sometimes you buy a charging cable at the roadside booth, no matter how you operate it, you can't connect to the computer. Why?

This is because both the data line and the charging line use the USB interface. Generally, there are four lines, but the charging line uses the two lines VCC and GND of the power supply, and the data lines use VCC, GND and Two communication lines.

The role of each wire of the USB data line:

Red line: positive power supply (identification on wiring: +5V or VCC)

White line: Negative voltage data line (identified as: Data- or USB Port -)

Green line: positive voltage data line (identified as: Data+ or USB Port +)

Black line: Ground (identified as: GROUND or GND).

Of course, the color of the wire can only be seen when the data line or the outer layer of the charging wire is peeled off. Guanhang Electronics recommends that you observe the USB head facing yourself, with the contacts facing up, from left to right, the functions corresponding to the lines connected by the contacts are: ground wire (or should be called: zero line, Connect the black wire), read the data line (signal outgoing line, connect green wire), write data line (signal incoming line, connect white wire), +5V line (positive power supply, connect red wire).

The data line has four lines in the USB interface, and the power line has only two lines in the USB line. Therefore, the mobile phone data line can be used as a power line, but the power line cannot be used as a data line. Because in order to save costs, basically the charging line eliminates the two lines in the middle, that is, the read data line and the write data line (green line and white line) are omitted, which means that there is no data reading and writing capability, only Can charge. This is also why the data line can be charged and the charging line does not necessarily work as a data line.

So the next time you buy a line, you must ask clearly, is the data line or the power line, the usb interface has a few lines, basically you know that you are knowledgeable, in order to avoid being fooled ~ more electronic data lines Related knowledge, you can pay attention to Guanhang Electronics official website, or directly call: 0769-8363 0959, we are happy to provide you with more professional guidance.