Contacts on the usb plug. Pinout of micro usb charging connector

It has been developed since 1994, and the development team consisted of engineers from leading companies in the field of IT technologies - Microsoft, Apple, Intel and others. In the process of conducting research, one task was pursued - to find universal port, which could be used for most devices.

Thus, users were provided with a USB connector, which was almost immediately supported by various developers and began to be actively used in the most different devices, ranging from personal computers to mobile gadgets. However, it so happened that cables with such connectors could not be used everywhere, and they themselves were different, and therefore some require unsoldering a mini-USB connector in order to make the appropriate adapter.

However, few people know how this procedure should be carried out correctly.

Concepts you need to know

Wiring a USB connector begins with learning the basic concepts:

VCC - positive potential contact For modern USB cables, the indicator of this contact is +5 Volts, it is worth noting that in radioelectric circuits this abbreviation fully corresponds to the supply voltage of PNP, as well as NPN transistors.
GND - negative potential contact of the power supply. In modern equipment, including also various models motherboards, this device connected to the housing in order to provide effective protection from static electricity or any external sources of electromagnetic interference.
D- is an information contact that has zero potential, regarding which information is broadcast.
D+ is an information contact that has a logical unit. This contact is used to broadcast information from the host to the device or vice versa. On physical level this process represents a transfer rectangular pulses with a positive charge, while the pulses have different amplitudes and duty cycles.
Male - the plug of this connector, which is among modern users, which is used to wire the USB connector for a mouse and other devices, is often called “male”.
Female - the socket into which the plug is inserted. Users are called "mother".
RX - receiving information.
TX - information transfer.

USB-OTG

OTG is a connection method via USB cable two peripheral devices without the need for a computer. Also, this wiring of a micro-USB connector is often called USB-host in professional circles. In other words, a flash drive or some kind of hard drive can thus be directly connected to the tablet or mobile phone just like a full-fledged personal computer.

In addition, you can connect mice or keyboards to gadgets, if they support the ability to use them. Cameras and other gadgets are often connected to printers in this way.

What limitations does it have?

The limitations that this type of micro-USB connector has are the following:

For example, if we are talking about connecting some kind of USB flash drive to the phone, then in this case the “USB_AF-USB_AM_micro” adapter is most often used. IN in this case A flash drive is inserted into the connector, while the plug is connected to the mobile phone.

Cable Feature

The main feature that distinguishes the wiring of a USB connector in the OTG format is that the plug has a 4 V pin mandatory must be connected to pin 5. In a standard data cable, to to this contact Nothing is soldered at all, but this plug is called USB-BM micro. It is for this reason that you need to get to the fourth contact, and then use a jumper to connect it to the GND wire. After this procedure, the plug will be renamed USB-AM micro. It is the presence of a jumper between these contacts in the plug that allows the device to determine that some kind of peripheral device is about to be connected to it. If the device does not see this jumper, it will act as a passive device, and any flash drives connected to it will simply be completely ignored.

How are devices identified?

Many people believe that when connecting in OTG mode, both devices fully automatically determine which of them will be the host and which will be the slave. In fact, in this case, only the user determines who exactly in this case will be the master, since in which device the plug equipped with a jumper between 4 and 5 contacts will be inserted, then of them will be the host.

How to make it?

Through the translucent insulation you can see several multi-colored wires. You will need to melt the insulation near the black wire, then solder one end of the jumper to the GND pin. On the opposite side you can see a white wire, as well as an unused pin. In this case, we need to melt the insulation near the unused contact, and then solder the second end of the jumper to it.

It is worth noting that the wiring diagram for a micro USB connector is much simpler.

The unraveled plug, which you equipped with a jumper, will need to be insulated, for which a specialized heat-shrinkable tube is used. After this, you will just need to take the “mother” from the extension cord and solder it to our color-matched plug. If the cables are shielded, then you will also need to connect the shields, among other things.

Can it be charged?

If peripherals are connected to the device via OTG, then it will have to power it, which can significantly reduce the overall operating time of the device from the built-in battery. In this regard, many people wonder whether it is possible through external source recharge such a device. This is possible, but this requires support for a special mode in the device, as well as a separate wiring of the USB connector for charging.

In fact, the charging mode is most often provided by modern gadget developers, but not everyone allows such a procedure. It should be noted that to switch to this charging mode, a separate USB connector wiring diagram must be used, in which the contacts are closed through a separate resistor.

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. Okay, at least on my own USB plug and the socket was 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 Samsung Galaxy in a plug USB micro-BM a 200 kOhm resistor must be installed between pins 4 and 5 and a jumper between pins 2 and 3.

Pinout of USB connectors for Garmin navigator

For power or charge Garmin navigator A special data cable is required. 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 anyone tablet computer required for charging high current- 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

For the correct charge Samsung tablet Galaxy Tab recommend another 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 some voltage diagrams for 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 ability additional food), 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 charge that is based on using 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 take the cable with the connector USB 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 insulate each connection 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 -.

USB cables have different physical ends. It depends on what device it is connected to. There are connections to the device itself and to the host. Moreover, USB can be with or without a cable. Another option is possible: the cable is built into the device itself. The cable is necessary to form an interface between the device and the host.

But after some time, the developers of such a computer interface as USB still had low speed in order to use external hard drives and other devices whose speed was much greater. Therefore, the creators of USB had to change the device so that it turned out new model. Now the speed of the third USB type became ten times faster. Of course, this also affected charging.

General information about USB

The USB cable consists of four conductors made of copper. These are two conductors intended for power supply, and the remaining conductors are in a twisted pair. This kit also includes a grounded braid.

Let's now take a little look at the host. It acts as a special controller, which is programmed and controlled. Its task: to ensure the operation of the interface. By the way, the controller can most often be found in a microcircuit. A hub is required to connect the controller to other devices.

But to connect already external devices to the hub, ports are used, at the end of which there are connectors. Cables help USB devices connect to ports. The device can be powered differently: from the bus or some kind of external power source.

It only takes a few minutes to get started and you can get started. At first the signal to start work is sent to the cable hub, which further informs that the equipment is ready for operation.

But it is worth remembering one rule. Whenever you start pinouting a device, first determine what the pinout is on your cable. The USB connector helps you connect all external devices to your computer. This modern way connections replaces all those methods that were previously available. Such connector gives additional features : during work computer equipment any devices can be connected and immediately put into operation. It may also affect the charging operation.

USB Specification

There were the first preliminary versions of USB, which began to be released in November 1994. This went on for a year. AND after that new USB models began to come out which are still in use today.

Today we can talk about the following models:

USB 1.0. This model was released in January 1996.
USB 1.1. This specification was released in September 1998.
USB 2.0. This model was released in 2000.

Technical characteristics of each model

The first model is USB 1.0. This specification distinguishes two operating modes:

Low bandwidth.
With high throughput.

The maximum cable length allowed in this model for the first operating mode is three meters, and for the second operating mode it reaches five meters. If you want to connect several devices, you can connect up to 127 of them.

The technical characteristics of the USB 1.1 model correspond to the first one, but all the problems and errors that arose during its use have been corrected. By the way, this is the first model that gained wide popularity and spread quickly.

The third model is USB 2.0. There are three operating modes for it, where mice, a joystick, gamepads, and a keyboard can be used, as well as video devices and devices that store information.

USB cables and connectors

Currently in computer world there have been many different changes. For example, it has already appeared new interface with modification USB 3.0, its speed is ten times faster than the previous model. But There are other types of connectors, known as micro- and mini-USB. By the way, they can be found nowadays, for example, in tablets, phones, smartphones and in a wide variety of other computer products.

Each such bus, of course, also has its own wiring or pinout. It is necessary in order to then make an adapter at home, allowing you to switch from one type of connector to another. But this requires knowledge. For example, certain knowledge about how conductors are located. For example, you can charge any phone this way. If this work with the connectors is done incorrectly, then the device itself will be damaged.

There is a difference in the design of mini and macro devices. So, now they already have five contacts. And in USB device 2.0 there are nine contacts. Therefore, the wiring of USB connectors in this model will proceed a little differently. Same pinout usb connectors will also be in modification 3.0.

Wiring will occur according to the following scheme: first, the red conductor, which is responsible for supplying the voltage that powers the current. Then comes the white and green conductor, whose task is to transmit information. Then you should go to the black conductor, which receives the supply of zero voltage that is supplied.

In the USB 3.0 design, the wires are arranged completely differently. The first four of them are similar in their connector to the 2.0 model device. But, starting from the fifth conductor, the connectors begin to differ. The blue, fifth, posting conveys the information that has a negative value. The yellow conductor conveys positive information.

You can also pinout the device according to colors that are suitable for the connectors of all devices. The advantage of such connectors is that when using them no need to restart your computer or even try to somehow manually install all the necessary drivers.

USB (Universal Serial Bus) The whole variety of USB version 2.0 connectors is shown in the picture below. The picture is clickable.

To avoid discrepancies: In all tables, the type of connector is given from its external, working side (and not from the mounting side!), unless otherwise specifically stated. The insulating parts of the connector are marked in light gray, the metal parts are marked in dark gray, and the connector cavities are marked in white.

Well, simplified, so to speak, practical scheme:

The name of a particular connector is provided with letter indices.

Connector type:

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

"Gender" of the connector:

M (male) - plug, “male”
F (female) - nest, “mother”

Connector size:

For example: USB micro-BM plug (M) for connecting to a passive device (B); micro size

USB connector pinout (jacks and plugs)

The purpose of the wires in the USB cable is as follows:

Red VBUS (+5V, Vcc - Voltage Collector Collector) +5 Volt DC voltage relative to GND. Maximum current - 500 mA
White D-(-Data)
Green D+ (+Data)
Black GND - common wire, ground, minus, 0 Volt

mini connectors and micro contain 5 contacts:

Red VBUS
White D-
Green D+
ID - not used in connectors “B”; in connectors “A” is closed to GND to support the “OTG” function
Black GND

Among other things, the cable contains (although not always) bare Shield wire - housing, screen, braid. This wire is not assigned a number.

Good news

A reversible micro-USB plug is being announced on the Internet, which, like USB 3.1 Type-C, does not require a clear ±180° orientation when connected to a socket.

Mouse and keyboard cord pinout

Some mice and keyboards may have different cable colors than standard. Detailed article about custom colors: “ Custom colors USB in mouse and keyboard cords"

Read also about connecting mice and keyboards to the PS/2 port

How to unsolder USB?

Well, with regular USB everything is simple - you take a mirror image of the front part of the connector and solder it.

The wiring of the USB mini and USB micro plugs from the mounting side is shown in the picture below. If you are soldering a simple data cable (for connecting a PC and a mobile phone/smartphone/tablet), then do not use the 4th pin. When soldering OTG cable(for connecting flash drives and other things to a smartphone) Connect the 4th pin to the 5th.

Mini and micro connectors contain 5 contacts. Type B connectors do not use the fourth pin. In type “A” connectors, the fourth pin is connected to GND. And the GND contact itself takes an honorable fifth place.

And here is a complete diagram of the USB cable with a screen.

Related materials:

All materials on the topic “USB” All materials on the topic “Charger” All materials on the topic “Computer”

Tags: USB, Cable, Computer, Mobile, Connector, Pinout (Wirout)

rones.su

Pinout of USB ports, pinout of micro USB, mini connector for charging

Currently everything mobile devices and desktop electrical appliances have data ports in their arsenal. Modern gadgets can not only exchange information via USB or micro-USB, but also charge batteries. In order to carry out proper pinout of contacts, you first need to study the diagrams and colors of the wires.

USB cable wire colors

Connector diagram for USB 2.0

In the diagram you can see several connectors that differ from each other according to a certain characteristic. For example, an active (power) device is designated by the letter A, and a passive (connected) device is designated by the letter B. Active devices include computers and hosts, while passive devices include printers, scanners, and other devices. It is also customary to separate connectors by gender: M (male) or “male” is the plug, and F (female) or “female” is the connector socket. There are formats by size: mini, micro and without marking. For example, if you see the designation “USB micro-VM,” this means that the plug is designed to connect to a passive device in micro format.

To pin out sockets and plugs, you will need knowledge about the purpose of the wires in a USB cable:

The red VBUS (“plus”) carries a constant voltage of 5 Volts relative to GND. Minimum force value electric current for it it is equal to 500 mA;
the white wire is connected to the negative (D-);
the green wire is attached to the “plus” (D+);
The black color of the wire means that the voltage in it is 0 Volts, it carries a negative charge and is used for grounding.

In mini and micro formats, the connectors contain five contacts: red, black, white and green wires, as well as ID (which in connectors of type A is shorted to GND, and in connectors B is not used at all).

Sometimes you can find a bare Shield wire in the USB cable. This wire has no number.

If you use the table in your work, then the connector in it is shown from the outside (working) side. The insulating parts of the connector are light gray, the metal parts are dark gray, and the cavities are marked white.

In order to carry out the correct USB wiring, you need to mirror the image of the front part of the connector.

Connectors for mini and micro USB formats consist of five contacts. Therefore, the fourth contact in type B connectors will not have to be used in operation. This contact in type A connectors is connected to GND, and the fifth is used for GND itself.

As a result of some simple manipulations, you can independently make pinouts for USB ports of different formats.

USB wiring version 3.0 is distinguished by the addition of four colored wires and additional grounding. Due to this, the USB 3.0 cable is noticeably thicker than its younger brother.

Schemes USB connections devices to each other and wiring of device plugs:

volt-index.ru

USB connector pinout: regular, mini, micro

In our age computer technology, smartphones and gadgets, it’s hard to find a person who doesn’t 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 located on charger, and on all computer peripheral devices.

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.

Wiring of such a plug, or, in other words, USB pinout wires, in their essence, do not carry anything overly complex. 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.

Types of USB plugs

What is a USB connector?

At its core, it is a connector with many capabilities, ranging from USB power before transferring 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 the company Apple has already there was a connector supporting 400 Mbit/s. Now there are also such types, but there are very few of them, since faster ones appeared long ago USB wires, mini USB, and indeed, USB speed occupies a special place in a person’s 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 already real 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:

USB pinout options

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.
Wire white-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.

Wiring of contacts in the “mother” USB 3.0

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 - visible here outer side. In order to solder the plug yourself, you need to take mirror image drawing, 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.

domelectrik.ru

USB connector wiring. Wiring diagram:

The USB connector wiring has been developed since 1994, and the development team consisted of engineers from leading companies in the field of IT technologies - Microsoft, Apple, Intel and others. During the research process, one goal was pursued - to find a universal port that could be used for most devices.

Thus, users were provided with a USB connector, which was almost immediately supported by various developers and began to be actively used in a variety of devices, from personal computers to mobile gadgets. However, it so happened that cables with such connectors could not be used everywhere, and they themselves were different, and therefore some require unsoldering a mini-USB connector in order to make the appropriate adapter.

However, few people know how this procedure should be carried out correctly.

Concepts you need to know

Wiring a USB connector begins with learning the basic concepts:

VCC is the positive potential contact of the power supply. For modern USB cables, the indicator of this contact is +5 Volts, and it is worth noting that in radioelectric circuits this abbreviation fully corresponds to the supply voltage of PNP, as well as NPN transistors.
GND – negative potential contact of the power supply. In modern equipment, including various models of motherboards, this device is connected by a housing in order to provide effective protection from static electricity or any external sources of electromagnetic interference.
D- is an information contact that has zero potential, regarding which information is broadcast.
D+ is an information contact that has a logical unit. This contact is used to broadcast information from the host to the device or vice versa. At the physical level, this process represents the transmission of rectangular pulses with a positive charge, while the pulses have different amplitudes and duty cycles.
Male is the plug of this connector, which is often called “male” among modern users who wire the USB connector for a mouse and other devices.
Female – the socket into which the plug is inserted. Users are called "mother".
RX – information reception.
TX – information transfer.

USB-OTG

OTG is a method of connecting two peripheral devices via a USB cable without the need for a computer. Also, this wiring of a micro-USB connector is often called USB-host in professional circles. In other words, a flash drive or some other hard drive In this way, they can directly connect to a tablet or mobile phone in the same way as to a full-fledged personal computer.

In addition, you can connect mice or keyboards to gadgets, if they support the ability to use them. Cameras and other gadgets are often connected to printers in this way.

What limitations does it have?

The limitations that this type of micro-USB connector has are the following:

For example, if we are talking about connecting some kind of USB flash drive to the phone, then in this case the “USB_AF-USB_AM_micro” adapter is most often used. In this case, a flash drive is inserted into the connector, while the plug is connected to the mobile phone.

Cable Feature

The main feature that distinguishes the wiring of a USB connector in the OTG format is that in the plug, pin 4 must be connected to pin 5. In a standard data cable, nothing is soldered to this pin at all, but this plug is called USB-BM micro. It is for this reason that you need to get to the fourth contact, and then use a jumper to connect it to the GND wire. After this procedure, the plug will be renamed USB-AM micro. It is the presence of a jumper between these contacts in the plug that allows the device to determine that they are going to connect some kind of peripheral device. If the device does not see this jumper, it will act as a passive device, and any flash drives connected to it will simply be completely ignored.

How are devices identified?

How to make it?

It is worth noting that the wiring diagram for a micro USB connector is much simpler.

Can it be charged?

If peripherals are connected to the device via OTG, then it will have to power it, which can significantly reduce the overall operating time of the device from the built-in battery. In this regard, many people wonder whether it is possible to recharge such a device through an external source. This is possible, but this requires support for a special mode in the device, as well as a separate wiring of the USB connector for charging.

Pinout micro usb — micro-USB desoldering is considered the most common type of repair of this type of device these days. Surely you have already encountered such a situation when present moment I need a USB adapter, but I didn’t have one at hand. Circumstances can be different - the device has broken down, has gone missing somewhere, is not on sale, its length is not enough, and so on. If you are familiar with the method of pinouting micro usb, then you can solve this problem with my own hands at home.

USB WIRE COLORS needed to perform USB CABLE repairs.

Conclusion	Name	Description
1	VCC	+5V
2	D-	Data -
3	D+	Data +
4	GND	Earth

The heterogeneity of USB 2.0 connectors is shown in the figure below.

The name of one or another connector is indicated by letter designation indices.

Connector Model:

A - active action, power source - personal computer USB Host Controller
B - passive action, additional equipment- computer printer or scanner

Connector type:

M - male connector
F - socket

Connector dimensions:

no designation index
MINI
MICRO

USB MICRO-BM pin connector (M) is used for connection with a passive device (B); dimensions micro.

Micro USB pinout - sockets and pin connectors

The purpose of the wires in the USB connector is as follows:

Red wire— +5v positive voltage relative to ground. Current limit - 0.5A
White wire D-(-Data)
Green wire D+(+Data)
Black wire GND - common bus, ground, body - no voltage

Mini - micro connectors are provided with five contacts:

Red color
White D-
Green D+
ID - not connected in connectors “B”; in connectors “A” is shorted to GND to ensure “OTG” operation
Black color GND ground

In addition to all of the above, a USB cable can have a core without insulation Shield - housing, braided shielding. This conductor is not assigned an identification number.

Correct perception of the connectors in the pictures:

All tables show the connector shown from its outer working side, and not from the side of the solder pads. The components that act as insulating elements in the diagram are light gray, segments made of metal are indicated in dark gray, and voids in the connector are marked in white.

USB wiring method

Standard USB does not cause any difficulties; you just need to take the drawing of the front side of the connector, geometrically transformed into a mirror image, and you can solder.

The pinout of the MINI and MICRO USB pin connectors is shown in the image below:

Five-pin connectors MINI and MICRO. In connector version “B” the fourth contact pad is not used. In option “A” the fourth contact pad is short-circuited to the GND bus. And the GND contact itself has the digital designation No5.