What is the role of USB data cable and the advantages of USB?

The four USB wires cannot be messed up, and there are others. The USB data cable has four pins, two of which are used to connect data, and the other two pins are used for charging power cables including ground wires. So the functions of the USB data cable are the same as those of USB. What are the advantages?

What is the role of USB data cable and the advantages of USB?

1. The function of the red wire: the positive pole of the power supply (the mark on the wiring is: 5V or VCC)

2. The role of the white wire: negative voltage data line (logo: data- or USB port-)

3. The function of the green wire: positive voltage data line (logo: data or USB port)

4. The function of the black line: ground (the symbol is: GND)

What are the main advantages of USB data cables?

1. Can be inserted. When the user uses an external device, it does not need to be shut down and then started up. Instead, plug it in directly while working in front of your computer.

2. Easy to carry. Most USB devices are "small, light, and thin." For users, it is convenient to carry large amounts of data with them. Of course, USB hard drive is the first choice.

3. Unify standards. Everyone has a hard drive with an IDE interface, a mouse and keyboard with a serial port, and a printer and scanner at the side of the mouth. But with USB, these application peripherals can be connected to a personal computer using the same standards. Mouse, USB printer, etc.

4. You can connect to multiple devices. USB often has multiple interfaces on personal computers and can connect several devices at the same time. If you connect a four-port USB Hub, you can use it; four USB devices, etc. Put your device on PC at the same time without any problem.

What else is a USB data cable used for besides charging?

USB data cables are used for connection and communication between computers and external devices, for charging mobile phones, and for the following functions.

1. Can be used to connect various electronic devices to achieve data transmission, data backup, and data synchronization without network conditions. This is a more important use of the USB data cable interface, especially data backup and synchronization, which is of great significance to the security of modern data. In order to prevent information from being intercepted under certain conditions, we cannot use the network to transfer data, so at this time we need to transfer data backup and data synchronization to ensure security.

2. Can be used to flash. This is for professional purposes. Generally speaking, it is more used in after-sales maintenance of mobile phones. The general interface requirement for flash machines is the COM model. This kind of dedicated line cannot be replaced by the general interface line. Only use this line when flashing to ensure the safety of the device and data. This can be said to be a special occasion for the USB data cable interface.