• Pinout micro usb 4 pin. Micro USB connector pinout. Micro USB connector: micro usb connector pinout

    USB 2.0 connectors – wiring.

    In this article we want to tell you about USB 2.0 connectors used in various electronic devices. They still have not lost their relevance, despite the release of faster USB 3.0, which we will talk about a little later in the next article on this topic.

    The abbreviation USB stands for Universal Serial Bus, translated as Universal Serial Bus.
    The picture below shows USB connectors version 2.0 (view from the working part, please note, this is not the soldering side):

    When soldering, select the desired connector, look at it in mirror image, and solder the wires in accordance with their color. The colors of the cable cores are described below.
    As you can see, the names of the connectors (USB, USB mini, USB micro) contain indices. The first letter of the index determines the type of connector:

    ● A – connector of the active power supply device (host, computer connector, etc.)
    ● B – connector of a passive device connected to an active one (connectors of printers, scanners, etc.)

    The second letter of the index determines the “gender” of the connector:

    ● M – from the English word male – that is, plug – that is, the “Male” connector
    ● F – from the English word female – that is, socket – that is, the “Mother” connector

    Simply USB, mini or micro tells us the size of the connector. Here's an example:

    USB mini AM is a male connector (plug) for connecting to a mini-sized active power supply device.

    Let's now look at the pinout (unsoldering) of USB connectors.

    The USB cable has 4 wires:

    ● 1 - Red wire – VBUS - +5 Volts with a maximum current of 0.5 Amperes.
    ● 2 – White wire – D- (minus Data).
    ● 3 – Green wire – D+ (plus Data)
    ● 4 – Black wire – GND – common wire, negative, “ground”

    Mini & Micro connectors 5-pin. The wiring is as follows:

    ● 1 – Red wire – VBUS.


    ● 4 – Blue wire – not used in connectors with the index “B”, in connectors with the index “A” it is connected to the black wire (GND) to support the “OTG” function.
    ● 5 – Black wire – GND.

    When cutting a cable, sometimes you can find another core without insulation - Shield - braid, shielding core, housing. This one lived without a number.

    The wiring of the USB Mini and USB Micro connectors is shown in the following figure:

    When unsoldering a data cable to connect a mobile phone, smartphone or tablet to a computer, the 4th pin remains empty. When unsoldering an OTG cable, for example, to connect a flash drive to a smartphone, the 4th pin must be connected to the 5th (GND).

    USB mouse. Connector pinout:


    ● 2 – White wire – Data minus.
    ● 3 – Green wire – Data plus.
    ● 4 – Black wire – GND.

    These are standard USB mouse cable wire colors, but depending on the manufacturer, these colors may differ from the above. For example, in Chinese-made mice such as Jusajoa X-7, many similar wire colors may be as follows:

    ● 1 – Orange wire – VBUS.
    ● 2 – Green wire – Data minus.
    ● 3 – Blue wire – Data plus.
    ● 4 – White wire – GND.

    Pin assignment of the motherboard connector for the USB 2.0 cable

    OTG - what is it?

    We mentioned the OTG function above, so now let’s understand a little what it is.

    OTG stands for “On The Go”, translated as “On the Go”, that is, it allows you to connect various peripheral devices via USB without connecting to a computer. Sometimes this connection is called USB-Host. For example, you can connect a flash drive directly to a mobile phone or tablet as if it were a full-fledged PC, or connect a keyboard or mouse to a gadget, but only if this gadget supports this peripheral equipment. Using USB-OTG, you can connect a camera and a photo printer, a camera with a smartphone, a mobile phone with a printer, etc.

    There are a number of restrictions on this type of connection:

    ● Older mobile phone models do not support USB-OTG.
    ● To connect a flash drive via USB-OTG, its format must be FAT32.
    ● The maximum flash storage size depends on the phone's hardware capabilities.
    ● HDD – also in FAT32, and a separate source will be required to power it.

    In stores selling mobile phones, smartphones and other gadgets, you can find ready-made OTG cables, and if you wish, you can purchase a ready-made adapter. Let's say you need to connect a flash drive to a mobile phone with a USB micro connector; for this you will need a USB_AF - USB_AM micro adapter. A flash drive is connected to the USB-AF connector, and a USB-AM micro connector plug is connected to the phone, respectively. The appearance of the OTG MICRO USB THROW OTG/USB adapter is shown in the following image:

    Connecting a flash drive to a tablet is exactly the same, only instead of a USB micro connector, the adapter should have a USB mini.

    And so, you already understand that a regular USB cable differs from a USB-OTG in that in a regular USB cable the 4th pin of the connector is not used, but in OTG there is a jumper between the 4th and 5th pins. It is by the presence of a jumper in a USB mini or micro that a phone, smartphone or tablet determines that you are about to connect peripherals to it. And if you suddenly decide to make a connection via a regular cable, then the gadget you are about to connect to will ignore the connected flash drive and will itself be a passive device. The picture below shows the USB-OTG micro cable connector:

    Connecting gadgets.

    Problems when charging various devices via USB often arise when non-standard chargers are used. At the same time, charging occurs rather slowly and incompletely or completely absent.

    It should also be said that charging via USB is not possible with all mobile devices. They have this port only for data transfer, and a separate round socket is used for charging.

    The output current in computer USB is no more than half an ampere for USB 2.0, and for USB 3.0 – 0.9 A. For a number of devices, this may not be enough for a normal charge.

    It happens that you have a charger at your disposal, but it does not charge your gadget (this may be indicated by a message on the display or there will be no charge indication). Such a charger is not supported by your device, and this may be due to the fact that a number of gadgets scan for the presence of a certain voltage on pins 2 and 3 before starting the charging process. For other devices, the presence of a jumper between these pins, as well as their potential, may be important.

    Thus, if the device does not support the proposed type of charger, then the charging process will never begin.

    In order for the device to start charging from the charger provided to it, it is necessary to provide the necessary voltages on the 2nd and 3rd USB pins. These voltages may also differ for different devices.

    Many devices require that pins 2 and 3 have a jumper or resistance element whose value is no more than 200 ohms. Such changes can be made in the USB_AF socket, which is located in your memory. Then it will be possible to charge using a standard Data cable.

    The Freelander Typhoon PD10 gadget requires the same connection circuit, but the charge voltage must be at 5.3 V.

    If the charger does not have a USB_AF socket, and the cord comes out directly from the charger case, you can solder mini-USB or micro-USB plugs to the cable. Connections must be made as shown in the following picture:

    Various Apple products have this connection option:

    In the absence of a 200 kOhm resistance element on pins 4 and 5, Motorola devices cannot carry out a full charge.

    To charge the Samsung Galaxy, you need a jumper on pins 2 and 3, as well as a 200 kOhm resistor element on pins 4 and 5.

    It is recommended to fully charge the Samsung Galaxy Tab in gentle mode using two resistors with a nominal value of 33 kOhm and 10 kOhm, as shown in the picture below:

    A device such as E-ten can be charged by any charger, but only on the condition that pins 4 and 5 are connected by a jumper.

    This scheme is implemented in the USB-OTG cable. But in this case, you need to use an additional male-to-male USB adapter.

    The Ginzzu GR-4415U universal charger and other similar devices have sockets with different resistor connections for charging iPhone/Apple and Samsung/HTC devices. The pinout of these ports looks like this:

    To charge your Garmin navigator, you need the same cable with a jumper on pins 4 and 5. But in this case, the device cannot charge while in use. In order for the navigator to be recharged, it is necessary to replace the jumper with a resistor rated 18 kOhm.

    Tablets usually require 1-1.5A to charge, but as mentioned earlier, USB ports will not be able to charge them properly as USB 3.0 will only output 900mA maximum.

    Some tablet models have a round coaxial socket for charging. In this case, the positive pin of the mini-USB/micro-USB socket does not have a connection to the battery charge controller. According to some users of such tablets, if you connect the plus from the USB socket to the plus of the coaxial socket with a jumper, charging can be carried out via USB.

    You can also make an adapter for connecting to a coaxial socket, as shown in the figure below:

    Here are the jumper diagrams indicating the voltage and resistor values:

    As a result, in order to charge various gadgets from non-native chargers, you need to make sure that the charging produces a voltage of 5 V and a current of at least 500 mA, and make changes to the USB socket or plug according to the requirements of your device.

    Convenient storage of radio components

    USB (Universal Serial Bus) - The USB data transfer interface is widespread today, used in almost all devices - phones, PCs, MFPs, tape recorders and other devices - used both for data transfer and for charging phone batteries.

    Types of USB connectors.

    There are a large number of types of USB connectors. All of them are shown below.

    Type A- active, power supply device (computer, host). Type B- passive, connected device (printer, scanner)

    USB cable pinout by color.

    USB 2.0 pinout.

    USB is a serial bus. It uses 4 shielded wires: two for power (+5v & GND) and two for differential data signals (labeled D+ and D-).

    USB micro

    USB micro has been used since 2011 in phones, MP3 and other devices. Micro is a newer variation of the mini connector. It has the advantage of connecting connectors, the connector is connected tightly to the plug and provides a tight connection.

    Most modern mobile phones, smartphones, tablets and other wearable gadgets support charging via a mini-USB or micro-USB USB socket. True, there is still a long way to go to a unified standard and each company is trying to do the pinout in its own way. Probably they should buy the charger from her. It’s good that the USB plug and socket itself were made standard, as well as the supply voltage of 5 volts. So, having any charger adapter, you can theoretically charge any smartphone. How? and read on.

    Pinout of USB connectors for Nokia, Philips, LG, Samsung, HTC

    Brands Nokia, Philips, LG, Samsung, HTC and many other phones will recognize the charger only if the Data+ and Data- pins (2nd and 3rd) are shorted. You can short them in the USB_AF socket of the charger and easily charge your phone via a standard data cable.

    Pinout of USB connectors on the plug

    If the charger already has an output cord (instead of an output jack), and you need to solder a mini-USB or micro-USB plug to it, then you do not need to connect pins 2 and 3 in the mini/micro USB itself. In this case, you solder the plus to 1 contact, and the minus to the 5th (last).

    Pinout of USB connectors for iPhone

    For iPhones, the Data+ (2) and Data- (3) contacts should be connected to the GND (4) contact through 50 kOhm resistors, and to the +5V contact through 75 kOhm resistors.

    Samsung Galaxy charging connector pinout

    To charge the Samsung Galaxy, a 200 kOhm resistor must be installed in the USB micro-BM plug between pins 4 and 5 and a jumper between pins 2 and 3.

    Pinout of USB connectors for Garmin navigator

    A special data cable is required to power or charge your Garmin navigator. Just to power the navigator via cable, you need to short-circuit pins 4 and 5 of the mini-USB plug. To recharge, you need to connect pins 4 and 5 through an 18 kOhm resistor.

    Pinout diagrams for charging tablets

    Almost any tablet computer requires a large current to charge - 2 times more than a smartphone, and charging through the mini/micro-USB socket in many tablets is simply not provided by the manufacturer. After all, even USB 3.0 will not provide more than 0.9 amperes. Therefore, a separate nest (often round type) is placed. But it can also be adapted to a powerful USB power source if you solder an adapter like this.

    Pinout of the charging socket of the Samsung Galaxy Tab tablet

    To properly charge the Samsung Galaxy Tab tablet, they recommend a different circuit: two resistors: 33 kOhm between +5 and jumper D-D+; 10 kOhm between GND and jumper D-D+.

    Pinout of charging port connectors

    Here are several diagrams of the voltages on the USB contacts, indicating the values ​​of the resistors that allow these voltages to be obtained. Where a resistance of 200 Ohms is indicated, you need to install a jumper whose resistance should not exceed this value.

    Charger port classification

    • SDP(Standard Downstream Ports) – data exchange and charging, allows current up to 0.5 A.
    • CDP(Charging Downstream Ports) – data exchange and charging, allows current up to 1.5 A; hardware identification of the port type (enumeration) is performed before the gadget connects the data lines (D- and D+) to its USB transceiver.
    • DCP(Dedicated Charging Ports) - charging only, allows current up to 1.5 A.
    • ACA(Accessory Charger Adapter) – PD-OTG operation is declared in Host mode (with connection to PD peripherals – USB-Hub, mouse, keyboard, HDD and with the possibility of additional power supply), for some devices – with the ability to charge PD during an OTG session .

    How to remake a plug with your own hands

    Now you have a pinout diagram for all popular smartphones and tablets, so if you have the skill to work with a soldering iron, there will be no problems converting any standard USB connector to the type your device needs. Any standard charging that is based on the use of USB involves the use of only two wires - +5V and a common (negative) contact.

    Just take any 220V/5V charging adapter and cut off the USB connector from it. The cut end is completely freed from the shield while the remaining four wires are stripped and tinned. Now we take a cable with a USB connector of the desired type, after which we also cut off the excess from it and carry out the same procedure. Now all that remains is to simply solder the wires together according to the diagram, after which each connection is insulated separately. The resulting case is wrapped on top with electrical tape or tape. You can fill it with hot glue - also a normal option.

    Bonus: all other connectors (sockets) for mobile phones and their pinouts are available in a single large table -.

    Content:

    In our age of computer technology, smartphones and gadgets, it is difficult to find a person who does not know what USB connectors are. Also, almost everyone understands words such as mini- and micro-USB connector. After all, we use such things almost every day, which is natural. Similar connectors are found on the charger and on all peripheral devices of the computer.

    But what to do if the soldering has come off at the base, and there is no way to even understand what color and what contact was soldered to? This is where knowledge should be applied, and now let’s try to figure out which ones.

    The wiring of such a plug, or, in other words, the pinout of a USB cable, inherently does not involve anything overly complicated. Once you get the sequence and colors figured out, anyone who can hold a soldering iron can do this kind of work.

    But first you need to understand what a USB plug is.

    What is a USB connector?

    At its core, it is a connector with many capabilities, ranging from USB power to transmitting complex information data. This cable replaced the previously used options for connecting to a computer (PS/2 ports, etc.). Today it is used for all devices connected to a personal computer, be it a mouse, flash drives, printer, camera or modem, joystick or keyboard - USB cables have become truly universal.

    There are three types of such connectors:

    • 1.1 - its purpose is already outdated peripheral devices with the ability to transmit information at only one and a half megabits per second. Of course, after a little modification by the manufacturer, the transmission speed rose to 12 Mbit/s, but it still couldn’t stand the competition with higher-speed options. Of course, when Apple already had a connector that supported 400 Mbit/s. Now there are also such types, but there are very few of them, since faster USB wires, mini USB, and in general, USB speed occupies a special place in human life. Everyone is in a hurry somewhere, in a hurry to live, there are people who practically do not sleep, and therefore the faster the information is downloaded, the more preferable the connector is, right?
    • 2.0. At the end of the last century, the second generation of such connectors was released. Here the manufacturer has already tried - the transmission speed has increased to almost 500 Mbit/sec. And it was intended mainly for complicated gadgets, like a digital video camera.
    • 3.0 - this is really high technology. The maximum data transfer rate of 5 Gbit/s provided this USB connector with demand, which practically reduced the first and second versions to zero. In the third series, the number of wires has been increased to nine versus four. However, the connector itself has not been modified, and therefore you can still use the types of the first and second series with it.

    Pinout designations

    When looking at the pinout diagram, you need to understand all the symbols that are present on it. Usually indicated:

    • Type of connector - it can be active (A) or passive (B). A connection between a printer, scanner, etc. is called passive. In general, a connector that only works to receive information. Through the active it is possible to receive and transmit data.
    • The shape of the connector is “mother”, that is, a socket (F), and “male” is a plug (M).
    • Connector sizes - regular, mini and micro.

    For example, USB AM, that is, an active USB plug.

    The wires should be arranged by color as follows (from left to right):

    • The red wire is positive, constant voltage 5V. with a maximum current of 500 milliamps.
    • White wire - data-
    • Green wire - data+
    • Black wire - this wire is common, ground, negative. There is no voltage on it.

    But the mini and micro connector include 5 wires with this arrangement:

    • The wires are red, white and green - arranged similarly to the first option.
    • ID - this wire in connectors “B” is free. In “A” it must be connected to a black wire.

    Sometimes the connector may contain a separate wire without insulation - this is the so-called “ground”, which is soldered to the body.

    According to the presented diagrams, the external side is visible here. In order to solder the plug yourself, you need to take a mirror image of the picture, and as it probably became clear, the microUSB pinout is no more complicated than that of conventional USB connectors.

    By the way, if the damaged parts of the cable are intended to be used only for charging mobile phones, it will be more convenient to look at the colors of the wires and solder only black and red. This connector is quite enough for a phone; it will charge it. What to do with the rest of the wires? You don't need to do anything with them.

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