• Pinout of USB connectors for charging phones. Pinout of USB plug Connection of USB to wires

    How to connect your phone to your computer? To solve this problem, there are several ways to pair smartphones and other mobile devices with a personal computer or laptop. All methods are quite popular and often used. These include:

    • Bluetooth.
    • Wi-Fi.

    The first of them is used least often, and it can only be used to transfer small files and data. For example, for a phone book address. This method, in addition to low speed and short range, will also require a significant portion of the battery charge. Plus you need to have a Bluetooth receiver for your PC, which also costs money. But there are, of course, some motherboards that have a built-in transceiver. Then the task becomes simpler. But what about another computer? Therefore, this method is the least widespread.

    The second option is the best and most often used. This is due to many factors:

    • performance;
    • convenience;
    • the ability to transfer large files;
    • multifunctionality.

    For this you will need:

    • configure and enable 3G or 4G Internet on the phone itself;
    • The Kies program must be installed on the computer;
    • connect the device to the PC with a USB cable;
    • On your phone you need to do the following, depending on the version of Android and the model of the device itself:

    1) Go to “Menu” -> “Settings” -> “Advanced settings/Other settings” -> “Modem and mobile hotspot” -> Select “USB modem”.

    2) Go to “Menu” -> “Settings” -> “Network” -> “Modem” -> Select “USB modem”.

    After a successful connection, a corresponding icon will appear in the upper right corner, and a new network connection will appear on the PC.

    Frequently asked question

    Why doesn't the computer see the connected phone? To resolve this issue, you need to do the following:

    • check the USB cable;
    • reinstall the software; this must be done with the phone disconnected from the PC;
    • Check the USB connection on another PC.
    Content:

    In every computer and other similar devices, the most popular is the USB connector. Using a USB cable, it became possible to connect more than 100 units of series-connected devices. These buses allow you to connect and disconnect any devices even while the personal computer is running. Almost all devices can be charged through this connector, so there is no need to use additional power supplies. USB pinout colors help to determine exactly what type of device a particular bus belongs to.

    USB device and purpose

    The first ports of this type appeared in the nineties of the last century. After some time, these connectors were updated to the USB 2.0 model. The speed of their work has increased more than 40 times. Currently, computers have a new USB 3.0 interface with speeds 10 times faster than the previous version.

    There are other types of connectors of this type, known as micro and mini USB, used in modern phones, smartphones, and tablets. Each bus has its own pinout or pinout. It may be required if you need to make your own adapter from one type of connector to another. Knowing all the intricacies of the arrangement of wires, you can even make a charger for a mobile phone. However, please remember that if connected incorrectly, the device may be damaged.

    The USB 2.0 connector is designed as a flat connector with four pins. Depending on the purpose, it is labeled as AF (BF) and AM (BM), which corresponds to the common name “mother” and “father”. Mini and micro devices have the same markings. They differ from conventional buses in that they have five contacts. A USB 3.0 device looks similar to the 2.0 model, except for the internal design, which already has nine pins.

    Pinout of USB 2.0 and 3.0 connectors

    The wiring in the USB 2.0 model is in the following order:

    1. The conductor is red, to which a DC supply voltage with a value of +5V is supplied.
    2. A white conductor used to transmit information data. It is designated by the marking “D-”.
    3. The conductor is painted green. It also transmits information. It is marked as "D+".
    4. The conductor is black. It is supplied with zero supply voltage. It is called the common wire and is designated by its own mark in the form of an inverted T.

    The layout of the wires in the 3.0 model is completely different. The first four contact wires fully correspond to the USB 2.0 connector.

    The main difference between USB 3.0 is the following wires:

    • Conductor No. 5 is blue. It transmits information with a negative value.
    • Conductor No. 6, yellow, like the previous contact, is intended to transmit information that has a positive meaning.
    • Conductor No. 7 is used as additional grounding.
    • Conductor No. 8 is purple and conductor No. 9 is orange. They perform the function of receiving data with negative and positive values, respectively.

    Wiring and pinout of micro- and mini-USB connectors

    Micro USB connectors are most often used in tablets and smartphones. Micro USB pinouts differ from standard buses in that they are significantly smaller in size and have five contacts. They are marked as micro-AF(BF) and micro-AM(BM), which corresponds to “mother” and “father”.

    Micro-USB wiring is carried out in the following order:

    • Contact No. 1 is red. Voltage is supplied through it.
    • Contacts No. 2 and 3, white and green, are used for transmission.
    • Contact No. 4, lilac, performs special functions in certain tire models.
    • Contact No. 5, black, is the neutral wire.

    The pinout of the mini USB connector by color is carried out in the same way as in micro-USB connectors.

    Install the necessary drivers. If you still have the packaging from the USB drive, then read the instructions and find out if the required driver is included. A driver is a software component that enables data exchange between a flash drive and a computer. All operating systems download the required drivers automatically, but if there is no internet connection or you need to install the driver manually, then just follow the instructions.

    • In this case, the driver is usually contained on the included disk. Place the CD in the drive and follow the prompts.

    Turn on your device and computer. If the USB drive is equipped with a power switch or a special cable, then the device must be turned on before connecting to the PC. Also, don't forget to turn on your computer.

    Connect the USB cable to your device (if necessary). Typically, small storage devices have a built-in USB connector, but portable hard drives and other devices may have a cable. Connect the cable to the device so you can then connect it to your computer.

    Find a USB port on your computer. The connector will look like a small rectangular hole with 4 metal pins inside. Typically, a USB port is identified by a corresponding logo in the form of a circle and an arrow with three prongs. If such a device will be permanently connected to the PC, then it is better to use the port on the back of the computer. The front connectors are more convenient for quick and short-term connections.

    Connect the USB cable to a USB port on your computer. Decide which port you want to use, then simply plug the drive connector into it. The connector should insert tightly and effortlessly in one direction, so rotate the cable 360 ​​degrees if you cannot connect the drive.

    Wait until the driver installation is completed. When you connect the device for the first time, the operating system can search for and install the necessary drivers. After a few seconds, your computer will alert you that the driver installation is complete and the device is ready to use. If you have already installed the drivers manually, the drive will be ready for use right away.

    After completing the necessary steps, disconnect the USB storage device. After work, the device should be turned off or “removed”. In Windows, you need to right-click on the USB device icon in Explorer and select "Eject". On a Mac, select and drag the drive icon to the Trash until the Eject icon appears. After this, you need to physically remove the drive from the connector without applying much effort.

    Universal Serial Bus (USB) wiring diagram

    USB connector wiring diagram

    USB connector wiring diagram (cable and device)


    USB connector wiring diagram (cable and device)

    USB signals are transmitted over two wires (twisted pair) of a shielded four-core cable.

    VBUS – voltage +5 Volts of the power circuit, GND – contact for connecting the “housing” of the power circuit. The maximum current consumed by the device through the USB bus power lines should not exceed 500 mA. Data is transmitted through the D- and D+ pins of the USB connector. Differential data transfer method is the main one for USB.

    USB cable connectors

    For the USB cable, special USB connectors are used. The USB cable is directional, therefore, for proper connection, the USB connectors have different configurations. There are two types of USB connectors: Type A (see Fig. 7. and Fig. 8.) and Type B (see Fig. 9., Fig. 10. and Fig. 11).


    Fig.7. Regular USB cable connector Type A

    In accordance with the 1.0 specification, USB Type A connectors are used for connection “to the host”, i.e. installed on the controller or USB hub side.


    Fig.8. “Proprietary” USB cable connector Type A

    In accordance with the 1.0 specification, USB Type B connectors are used for connection “to the device”, i.e. for connecting peripheral devices.


    Fig.9. Regular USB cable connector Type B. This connector is suitable for, for example,
    to connect a printer


    Fig. 10. Regular USB mini cable connector Type B


    Fig. 11. Micro USB cable connector Type B. In the figure, below the USB symbol, the Type B designation is clearly visible

    In Fig.12. and Fig.13. USB cables shown. These USB cables are equipped with a regular Type A USB cable connector and a Type B USB mini cable connector.


    Fig. 12. USB cables are equipped with a regular Type A USB cable connector (in the picture on the left) and a Type B USB mini cable connector (in the picture on the right). Type B is designated as B


    Fig. 13. USB cables are equipped with a regular Type A USB cable connector (in the picture on the left) and a Type B USB mini cable connector (in the picture on the right). Type B is designated as b


    Fig. 14. USB cable equipped with a miniature connector called micro USB

    USB supports hot (power on) plugging and unplugging of devices. This is achieved by increasing the length of the grounding contact of the connector in relation to the signal contacts, see Fig. 15. When a USB connector is connected, the grounding contacts are closed first, the potentials of the bodies of the two devices are equalized, and further connection of the signal conductors does not lead to overvoltages, even if the devices are powered from different phases of a three-phase power network.


    Fig. 15. The length of the grounding contact (in the figure, pin 4 GND at the top) of the connector is increased in relation to the signal (in the figure, pin 3 D+ at the bottom) contacts. The upper contact is longer than the lower one. This allows you to connect and disconnect devices without turning off the power (so-called “hot plugging and unplugging”)


    Fig.15.a. The length of the power contacts of the USB connector of the flash card (outer contacts in the figure) is increased in relation to the signal contacts (middle contacts in the figure). This allows you to connect and disconnect devices without turning off the power (so-called “hot plugging and unplugging”)

    The mating parts of the USB connectors are located on peripheral devices connected via USB, see Fig. 16. and Fig.17.


    Fig. 16. USB cable connector. The USB symbol is clearly visible


    Fig. 17. USB mini Type B cable connector


    Fig. 18. Comparison of USB connector sizes. A regular USB cable connector Type A (in the picture on the left), a USB mini cable connector Type B (in the picture in the center) and a USB micro cable connector Type B (in the picture on the right). Type B is designated as B

    Hi all! Today we will look at several questions on the topic of how to connect USB to a computer. First, we will learn how to connect any devices to a PC or laptop. And secondly, I’ll tell you how you can connect additional USB ports to your computer if you don’t have enough of them for all your devices. So, let's go!

    How to connect a USB cable to a computer?

    A USB port is by far the most common type of connecting devices to a computer or laptop. There are three types of connectors: 1.0, 2.0 and 3.0. If the first one can now be found only on the oldest computers, then the second and third ones are used today. At their core, they differ in data transfer speed. And in appearance, what is more important for us now is color. USB 2.0 has a black connector and plug, USB 3.0 has a blue color. You can read more about the specifications and differences between standards.

    Before you connect the USB cable to the computer, look at the plug of your gadget - if the blue connector is connected to the black port, then the device will not use all its speed characteristics to the maximum. If you plug the black plug into the blue one, then absolutely nothing will happen - the USB 3.0 port will simply operate at the speed that is maximum for 2.0.


    So, look at the back panel of your computer, find a USB port of the same color as the plug, and connect it.


    After this, the device will either be detected by itself in the system, if it is a keyboard, mouse, webcam, or some other simple and common device for which Windows already has a driver. Or to work you will need to install the software that comes with the device on CD.

    How to connect additional USB ports to a computer?

    Any modern motherboard already has built-in USB ports - both 2.0 and 3.0. However, we usually connect so many different peripherals that there may simply not be enough of them, for example, to connect a flash drive or external drive and transfer fresh photos to it.


    Connecting a USB stick to the rear panel

    What to do? There are two ways. The first, preferable one, is to buy a separate bracket with USB ports and insert it into the additional slots available on the rear panel of the case - the same ones where we attach a video or sound card, a wireless adapter, and other components that are connected directly to the board. It looks like this:


    In order to accomplish this task, the motherboard must support the connection of additional USB ports. This can be determined by the presence of connectors on the motherboard labeled USB or USB 3.

    Connectors for USB 3.0 are large, have many contacts and are designed to connect two ports at once in one plug.




    USB 2.0 is smaller and each of them can be connected to 2 ports separately.



    Accordingly, we look at the presence of such connectors on the motherboard, buy the corresponding brackets, fix them in the back of the case and connect them to our connectors.

    Connecting a unit with USB ports instead of a flop

    Another variation of this method of increasing the number of ports is a special unit with USB, which is inserted into the front of the case instead of the old floppy disk 3.5


    There are many options for designing such a block. For example, combined to connect USB 2.0 and 3.0


    And in the following example, USB 2.0 ports are combined with connectors for connecting a microphone and headphones


    Connecting such a block occurs in exactly the same way as the bracket described above - to the corresponding connectors on the motherboard.

    External USB hub

    Finally, another option for increasing the number of ports is to buy an external USB hub. However, there are a number of disadvantages, because of which I would not connect any serious equipment through it, but would only use it for flash drives or, as a last resort, a mouse.


    Since this is a hub, all the load from its several ports goes to one single computer to which it is connected. Due to this overload, certain devices may periodically fall off, which is not good. If you connect a hard drive to a USB hub, the electricity supplied through it may not be enough to operate it. Therefore, we reserve this method only for light fast food - flash drives.

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