Connector rj 45 diagram. How to crimp an Internet LAN cable: what is needed for crimping, basic rules for crimping twisted pair cables. Learn more about end-to-end and cross-connections

It is difficult to answer unambiguously the question of why you need to know how to pin out RJ45 and crimp the cable at home. First of all, pinouts are in demand by people who have decided to renovate their apartment. The banal replacement of the cable sticking out of the window frame and the distribution of a high-speed network throughout the rooms is the second reason. Still others need to connect specific equipment; others want to play over a network between two computers. Knowledge is never superfluous.

About the cable and tool

The most important component is the twisted pair cable. On store shelves it is found with four and eight cores. The difference in price occurs due to the country of origin and additional shielding. Without going into electrophysics, let us explain that the cable received the name “twisted pair” due to the fact that all pairs of cores are intertwined. This interlacing allows you to transmit a signal via cable over a long distance (up to 100 meters without an amplifier). RJ45 pinouts are carried out by color. There is a specific sequence for each task, and each cable color corresponds to its position in the socket or connector.

A special crimping tool is used to crimp the cable, but if you don’t have one at hand, a hammer, flat-head screwdriver or knife will do. An RJ45 plug is also required for networking. It can be replaced with an old one, having first cleaned the channel for the wires, or expose the protruding ends of the wires for twisting.

Cable crimping technology

Pinout of RJ45 cable requires special training. The main thing is to remember that the technology is unchanged for cable crimping. Only the color sequence of the cable cores changes.

1. The top layer of the winding is carefully cut off. The cut length is about 5-6 cm for ease of wiring.
2. The wires lined up in the required color range are cut with scissors so that the length from the tips to the base of the common cable does not exceed 3 cm.
3. By holding the plastic RJ45 plug with the clamping clip facing down, the wires are carefully inserted into the housing. If you look closely, each core has a special channel into which it is impossible to insert two cables. The main thing is to maintain the desired sequence.
4. Using a little force, make sure that the ends of the wires touch the copper inserts on the edge of the crimp connector.
5. Without allowing the cable to slip out of the connector, carefully crimp each core by pressing on the copper insert with a screwdriver or knife. You can gently increase the pressure with a hammer blow.

As a result of the work performed, all wires should be securely fastened in the plastic housing of the RJ45 plug. The other end of the clip with a common braid can be spliced ​​for convenience with electrical tape.

Technology of cable routing in the socket

Pinout of an RJ45 socket does not require any specialized equipment, so distributing a local network throughout the facility is carried out with great pleasure and speed. You only need one tool - nail scissors or a small knife with a thin blade.

1. The top layer of the winding is carefully cut off. The cut length is about 10 cm for ease of wiring.
2. The twists of all pairs are unwound and the wires are aligned so that from the base of the top layer to the tips of the wires they do not intersect.
3. Any socket has two color markings. “A” - cross connection, “B” - standard connection. According to the last marking, the RJ45 pinout is carried out.
4. Having attached the base of the braid to the board, first the cores are inserted into the far connectors. Be sure to check the cable tension so that the distance from the braid to the clamp does not exceed 3 cm.
5. Having secured the cable cores in the required connectors, crimping is performed. Holding the nail scissors so that the angle of the cutting guides is 45 degrees, you need to press on the core from above until you hear a characteristic metal click.

Installation of a socket for a century

The main thing to consider when installing a power outlet on a wall is the position of the connectors in relation to the floor. Connectors should always face down. Firstly, it protects the contacts from becoming clogged with dust and moisture. Secondly, when you quickly connect the cable from below, there is less chance of accidentally knocking down the socket mount on the wall. Even from an aesthetic point of view, connecting the cable from below is not so striking and does not spoil the beautiful decor in the room.

In addition to its direct purpose, a computer network socket is used to transmit extraneous signals (telephony, stereo sound, video signal). After all, it’s no secret that for connecting the Internet, the RJ45 pinout is critical for four cores, the rest are either spare or for gigabit networks, which are not organized at home in the post-Soviet countries.

Connecting to the Internet in a standard way

The RJ45 pinout by color when creating a cable for connecting a personal computer to network equipment looks like this.

1. White-orange.
2. Orange.
3. White-green.
4. Blue.
5. White and blue.
6. Green.
7. White-brown.
8. Brown.

If there is a need to connect to two computers using one cable or to send another signal through the free wires, then the pinout is made in two pairs - green and orange, observing the sequence and numbering in the connector. That is, connections 1, 2, 3, 6 in the RJ45 plug should be occupied according to their color distributions.

There are times when one or more active cores are broken. An alternative RJ45 pinout will come to the rescue. 2 pairs are replaced with other colors. The orange pair is replaced by a brown one, and the green pair by a blue one. The numbering of the connectors in the plug does not change.

Connecting two computers together

Recently, the RJ45 computer-to-computer pinout is not in demand. After all, most modern network adapters have learned to understand what the user wants from them. The information will be useful to those owners whose adapters do not know how to “reverse” the wires in the power plug.

This cable is also suitable for connecting two network hubs that do not have an Uplink switch. To make it easier to remember the color pinout of the crossover cable, it is enough to see that pairs 1-2 have swapped places with pairs 3-6. The remaining color pairs should be paid attention to if the network adapters can work in gigabit networks, otherwise they can be used for other needs.

Connecting peripheral equipment

It is unlikely that most people will need the RJ45-USB pinout, but it won’t hurt to gain knowledge about it. This strange connection is actively used when connecting expensive server systems, and is also quite popular in the banking industry, when connecting office equipment and cash registers. It is better to do the pinout using a soldering iron, but if you don’t have one, everything will work even with twists.

The fully crimped cable in the RJ45 plug is cut to the required length with a knife. The cut end is stripped of 5 cm from the winding. Any plug of the USB cable is disassembled or cut so that the connectors are accessible. Before cutting the wires in the USB plug, you need to strip the red and black cables down to the copper base and twist them together. After all the manipulations, the following RJ45 connection to USB is made.

1. The white-green wire from the third connection is soldered to the red-black USB twist (GND).
2. The blue wire from the fourth connector connects to the green USB (RX) cable.
3. The white-blue wire from the fifth connection is connected to a white USB (TX) cable.

For structural strength, you can use electrical tape.

In conclusion

Pinout of RJ45 should not be particularly difficult. There is no need to worry that due to poor-quality crimping the communication channel will be lost or a short circuit will occur. Nothing like this will happen even in theory. Working carelessly with a knife or screwdriver instead of a professional tool can only create slight interference in the line, which is reduced to zero on cable sections of up to five meters. But you still need to strive to achieve maximum results. It’s better to do it once, but do the job efficiently and forever.

Most often, the installation and connection of an Internet outlet related to low-current lines is carried out in a triple block:

• regular 220 Volt

• internet socket

• television under TV

For most models, for example from Schneider Electric (Unica series), Legrand, Lezard, the installation principle is almost the same and does not contain fundamental differences.

Let's take a step-by-step look at the entire cycle of connecting an Internet outlet.

Internet cable

Installation begins with installing the router in a low-current switchboard and connecting it to a 220V power outlet.

Next, a 4-pair UTP series 5E cable is laid in a separate cable channel or groove not connected to power lines.

This cable provides connection speeds of up to 1 Gigabit per second over a distance of up to 100m. Here are its technical characteristics:

There are shielded and unshielded varieties. Foil acts as a shield in networks where there is normal grounding.

One such 5E cable (4 pairs) can only connect two sockets. In this case, 2 pairs will be involved separately.

Installation is carried out with a single wire directly from the switchboard to the socket box. Lead the cable into the installation box and leave the necessary margin - from 15 cm or more.

Installation of an internet outlet

First remove the cover from the socket and pull out the caliper for ease of installation.

If the design of the socket allows, the frame can be mounted initially on the socket box. Thanks to the grooves in the frame, you can easily adjust its horizontal position.

Use 3*25mm screws to pre-tighten the entire structure. At the same time, you check the accuracy of the installation with a Pocket Electric level and tighten the screws completely.

Manufacturers have recently begun to make frames from aluminum alloy; they are, of course, stronger in design, but will not be magnetic to the level. You will have to support it with one hand.

Next, bite off and leave a supply of wire in the socket, a maximum length of 15 cm. Remove the top layer of insulation from the UTP cable.

To remove the insulation, so as not to damage the conductors, it is better to use a special tool - a stripper. But you can do all this carefully and with an ordinary stationery knife.

The top layer of the cable must be cleared to a length of no more than 2.5 cm. Cut off the excess thread in this case that goes between the cores.

A strong thread in twisted pair cables, often used to facilitate opening the sheath over long lengths. It’s even called that – a breaking thread. In telephone cables, it separates bundles and layers.

Lightly unravel the veins individually. Next, pull out the inner part of the socket with the contacts.

As a rule, any brand, be it a TV, an Internet outlet or a regular 220 Volt, should come with instructions.

Instructions for the Schneider Electric Unica internet socket –
Instructions for Legrand –

Standards and connection diagram

Open the cover of the contact part and carefully study the markings. Each RJ45 socket can be connected in two ways:

• according to standard “A”

• according to standard “B”

In most cases, the second option is used - "B". To understand where to connect which wires, carefully inspect the housing. It should indicate which standard corresponds to certain contacts.

For example on Unica:

• protocol “B” refers to the top color coding. When connecting, you will be guided by these colors.

• “A” – to the bottom color marking

If you figure this out, then there will be no difficulties with further installation. Protocol “B” follows the color scheme according to the EIA/TIA-568B standard. One side of the clip should have the following colors:

• white- orange

• orange

• white- green

• green

On the other side:

• blue

• white- blue

• white- brown

• brown

Pass the wire through the cap. In this case, as mentioned above, the top layer of UTP cable insulation should not be removed by more than 2.5 cm.

You cannot strip it right up to the wall of the socket box, as is done with conventional NYM or VVGnG cables.

The section without insulation must be of a minimum length. All these twists are not done easily. Their exact quantity per 1 meter of cable is strictly calculated and regulated.

Otherwise, if you connect and strip it incorrectly, not only the speed, but also the quality of data transfer may decrease.

Next, insert all the wires into the contact grooves by color.

Then you simply snap the lid on. Extra sections of cores that protrude outwards You need to cut it off after closing the lid.

The outlet is actually already connected. All that remains is to insert it into place in the caliper.

The main advantage of such Internet sockets is that with them there is no need to remove the insulation from the cores and expose it to copper. Special knives are already installed inside the socket itself.

When you close the lid, the blades automatically cut through the insulation and create a contact connection. The instructions for such brands often indicate that when connecting the wire, the use of special crimpers is prohibited.

It’s as if it’s already in the design. That is, when the lid is closed, it itself cuts off the insulation and lays the wires to the required depth of the connector.

Connecting to the router and crimping the connector

After installing the Internet outlet itself, all that remains is to correctly connect the cable to the router in the communication panel.

Remove the insulation from the other end of the cable by 2-3cm. The wires are fluffed up and inserted in a certain order, according to the TIA-568B standard, or simply “B”.

The arrangement of colors is considered from left to right:

• white- orange

• orange

• white- green

• blue

• white- blue

• green

• white- brown

• brown

Standard "A" is sometimes used if you need to connect one computer to another. Here you crimp one end of the cable according to standard “B”, and the other according to “A”. In general, if both ends of the cable are crimped to the same standard (AA or BB), then this is called a patch cord. And if they are swapped (AB or BA), then it is a cross.

Again, there is no need to strip the veins. Just insert them into the connector until it stops.

After which all this is pressed in with a special crimper. Some people do this with a thin screwdriver or a knife blade, although this can easily damage the connector.

The cat5E and cat6 cables in the RJ45 connector are crimped according to the same principle. Another "fork" is not required here. Cables differ in data transfer speed; cat6 has a higher speed.

Checking your Internet connection

After installing the Internet socket and connector at the other end of the cable, it is advisable to check the connection and integrity of all connections. This can be done with the cheapest Chinese device.

What is its essence? There is a signal generator that sends pulses according to certain codes, and a receiver. The generator is connected to the location where the router is installed, and the receiver is connected directly to the outlet itself.

After the pulses are applied, the signals are compared. If everything is in order, the green LED lights on the receiver body light up one by one. If there is a break or short circuit somewhere, then one or more light bulbs will not light up at all.

When this happens, the first thing to blame is poor contact in the connectors. Most often, it is there, on any core, that the insulation is not completely cut off and, accordingly, there will be no connection.

At the very end, a ready-made, tested cable with a connector is connected to the router.

A complete set of all tools for cutting, crimping, and testing UTP Internet cables can be ordered on AliExpress (free delivery).

How to connect a 4-wire telephone cable

But what should you do if you use a 4-wire telephone cable for the Internet, and the socket is a standard 8-wire socket? How to connect the circuit in this case?

Simple color matching won't help here. That is, if you insert the white-blue core into contact with the white-blue marking and connect all the other wires in the same color, there will be no signal.

This is explained by the fact that to transmit the signal you need to use contacts 1-2-3-6.

On one side, connect two wires to contacts 1-2:

green = blue lived

In this case, everything should work without problems. Just remember that here the most important thing is not the colors, but the positions. Colors are used to make it visually easier to distinguish the positions of the same core at different ends of the cable.

Also keep in mind that when using 4 wires, i.e. two pairs of twisted pair, you can achieve speeds of up to 100Mbps. But for a gigabit network (1Gbit/sec) you will already need all 8 wires.

Errors when connecting an Internet outlet

You can easily confuse the order of the wires on the connector and in the socket itself. Roughly speaking, turn them 180 degrees.

Here everything is checked by a more careful study of the inscriptions on the body of the socket and the color of the wires themselves. A tester with a signal generator and receiver is a good helper for identifying such errors.

If the wires are connected incorrectly, the lights on the tester will light up not in order from 1 to 8, but in random patterns. For example, first 1, then immediately 3, then 2, etc.

That is, immediately after placing them in their places in the slot. In this case, the core may accidentally fall out, and it will not be possible to insert it back after being cut. You will have to clean everything out again and go through the entire connection cycle again.

And if you left the supply of cable in the installation box small, then you will face a big headache.

As mentioned earlier, the result here is a deterioration in the speed and quality of the signal. Moreover, there is no need to unravel the twisted pairs first to the point where the insulation is cut, especially with a screwdriver. Simply embroider them by spreading the strands to the required length to fit them into the slots.

According to the standard, it is not allowed to unwind a twisted pair cable by more than 13mm, otherwise crosstalk errors will appear in frequency response tests. In practice, problems will begin when the network is loaded with traffic.

Twisted pair cable is classified according to two standards: ISO 11801 and EIA/TIA 568. It got its name due to the presence of paired cores twisted together.

Today, there are several schemes for crimping twisted pair cables and RJ 45 connectors. Despite the rapid development of wireless technologies, network cable continues to be actively used to connect PCs to the Internet and when creating local networks (LANs).

RJ45 connector color pinout

Each twisted pair wire has its own color. This allows devices to be connected correctly, as each cord performs a specific task. However, when wiring one color to another there is no danger, and the signal will continue to be transmitted. For example, if you connect white-orange instead of orange, the operation of the devices will not be disrupted. Today, two RJ45 twisted pair crimping schemes are used: T658a and T568b. They are similar in many ways, only the green and orange wires have swapped places. When connecting an Internet cable between a PC and a router, the second scheme is most often used.

Twisted pair connectors have 8 pins, of which only half can be used. If the user does not have high requirements for connection speed and 100 Mb/s is enough, then only 4 contacts can be used. All positions are used only when creating high-quality networks with a throughput of 1 Gb/s. You can see what these socket layout diagrams look like in the photo.

For correct crimping of the network cable one of three methods is used:

To properly crimp a network cable, you need to perform several steps. First of all, you should remove the insulation from it. At this point, extreme care must be taken to avoid damaging the colored wires. When all eight strands are visible, they need to be separated and cut to the same length. After this, you can select a scheme according to which the Internet cable will be crimped.

Straight type

It is suitable for transmitting any traffic. The only condition for trouble-free operation is to use the same circuit at each end of the cable. Most often, T568 V is used. If the transmitted traffic does not exceed 100 Mb/s, then you can use a 4-core cable. After removing the insulation, arrange all wiring correctly according to the diagram being used.

When inserting them into the plug, it is important to monitor the sequence of the wires, since it will no longer be possible to re-crimp the wires. When the wires have been inserted into the connector all the way, use a special crimping tool that resembles pliers. Squeeze it firmly and the crimping of the network cable can be considered completed.

Cross type

This RJ45 pinout is used to create a local network between two computers. The crimping process itself is no different from that discussed above. If, when creating a straight-through Internet cable, one color scheme is used at each end, then both should be used.

As mentioned above, sometimes an inverted cable type is used. However, it is only used by network administrators. At home, you won't need a console cable. Before starting the cable crimping procedure, it is necessary to accurately calculate its length. Although twisting can be used to extend twisted pair cables, it is best to avoid this.

Crimping diagram for a 4-core network cable

The four-wire Internet cable was widely used during the mass adoption of the Internet. Its cost is almost two times lower in comparison with an eight-core one, but the connection speed cannot exceed 100 Mb/s. In such a situation, the use of a four-core cable is beneficial from a financial point of view.

If a patch cord is created for a network with a low data transfer rate, but only an 8-core cable is available, then it makes no sense to unplug all the pairs. To connect, you must use wires numbered 1 to 3 and 6. Thus, you first need to decide which network cable you will use to get the desired connection speed.

Work without special tools

Often there is no crimper at hand. To make a patch cord yourself in such a situation, you can use a regular screwdriver. However, this will significantly complicate the process for two reasons:

• It is difficult to achieve high quality installation.
• The risks of connector breakage or patch cord damage increase.

Here is the algorithm of actions in this situation:

• Actions are being taken to cut the twisted pair cable.
• All wires are sorted according to the selected color scheme.
• The wires are cut to the same length and carefully inserted into the connector.
• With the plug facing down and the contacts facing up, place it on a flat surface. In this case, the latch must remain free to avoid damage.
• Gently press the connector latch and lock it to securely secure the cable.
• Using a screwdriver, press all contacts into the housing.

Extreme care should be taken here, as the plates are easily damaged.

With the advent of the Internet, the lives of many families have changed. Most of them are connected to the Internet, especially since you don’t need much for this; it’s enough to have a personal computer or the most common mobile phone. In turn, each family member can be connected to a separate line. Local distribution of the Internet resource is carried out wirelessly using a special Wi-Fi protocol. And yet, many prefer distribution by wire, as it is much more reliable, simpler and cheaper. In addition, the presence of additional electromagnetic waves negatively affects a person’s well-being.

As a rule, they try to hide all wires in the walls so that they do not interfere. Internet cables are no exception. This is mainly carried out during the period of repair work. For this, there are special sockets called computer or information sockets. Basically, sockets with RJ-45 connectors are used. You can do all the installation processes yourself if you know how to do it, especially since there can be more than two wires and you need to know which contact to connect to which. The procedure is performed not by twisting or soldering, but by crimping, using a special tool for this.

The Internet cable that enters the apartment is called twisted pair and is connected to a plastic connector. This plastic connector is called a connector, designated RJ-45. Professionals call such devices “Jacks”.

Basically, the plastic connector is made of a transparent material through which all the different colored wires are visible. Exactly the same parts are used to connect computers, a modem to a computer, and other computer hardware. In this case, the arrangement of colored wires may not be the usual one. This is the connector that is inserted into the information socket. The most important thing here is to understand the order of all the wires and then the problem with crimping the connector will be solved.

There are two connection schemes: T568A and T568B. We do not practice the first connection option, and the connection is carried out according to scheme “B”. Therefore, you need to familiarize yourself with the arrangement of colors according to this scheme.

A very important point is the number of wires in a twisted pair. As a rule, cables with 2 pairs or 4 pairs of wires are used. 2-pair cables are used to transfer data at speeds up to 1 Gb/s, and 4-pair cables are used to transfer data at speeds from 1 to 10 Gb/s. Internet cables are installed in private houses and apartments, where data transfer is carried out at speeds of up to 100 Mb/s. Despite this, there is a steady trend towards increasing the speed of transfer of Internet resources. Therefore, it is better to play it safe and install a 4-pair cable with the future in mind. Moreover, the connectors and sockets are produced for connecting 4-pair twisted pair cables.

When using a 2-pair cable, after laying the first 3 wires according to diagram “B”, the green wire is connected to the sixth contact, skipping two contacts. This can be seen in the corresponding photo.

To crimp the ends on the connector, special pliers are used, which can cost from 6 to 10 dollars, depending on the manufacturer. When using such a tool, high-quality contacts are obtained, although this can be done using wire cutters and a screwdriver.

First, you need to remove the protective insulation from the cable, at a distance of 7-8 cm from the end of the cable. The cable contains four pairs of wires of different colors, twisted in pairs. There are cables with a thin shielding braid. It won't be needed, so you can simply bend it to the side. All pairs are untwisted, and the wires are aligned, spread apart and laid out according to pattern “B”.

The separated wires are clamped between the thumb and forefinger. At the same time, you need to make sure that the wires are straight and tightly pressed to one another. If the wires are of different lengths, they can be aligned with wire cutters, leaving a total of 10-12 mm in length. If you take the connector and try it on, the insulation of the wires should start slightly above the latch.

This can also be seen in the photo. After this, the prepared wires are inserted into the connector.

It is very important that each wire falls into a special path, and each wire must rest against the edge of the connector. Holding the cable in this position, it is inserted into the pliers. Crimp the cable with a smooth, careful movement until the handles of the pliers come together. If all prepared operations are performed correctly, then there should be no problems. If you feel that additional force is needed, then it is advisable to pause the crimping process and check everything again. The main thing is that the connector is in the correct position. After checking and adjusting, crimping continues.

During the crimping process, the pliers push the conductors towards the microknives, which push the insulation and establish contact with the conductor.

The result is a reliable connection with excellent contact. If it doesn’t work the first time, the crimping process must be repeated. To do this, the wires with the “jack” are cut off, stripped, a new “jack” is taken and the process is repeated. The main thing is to stock up on “jacks”, because it’s unlikely to succeed the first time.

Video tutorial: crimping an RJ-45 connector

Thanks to the advent of the Internet, many problems are solved quite quickly, especially after watching videos. Therefore, before proceeding directly to crimping the wires, it is advisable to review the video, and very carefully. It shows how to properly handle ticks and how you can do without them. Still, it’s better to play it safe and use a tool for better quality work.

How to connect an internet cable to a power outlet

To begin with, it should be noted that Internet sockets, like electrical sockets, there are two types: for external installation and for internal installation.

It should be noted that all sockets are collapsible and consist of three parts: half of the socket body is used for fastening, the inside of the socket is intended for connecting wires, and the second part of the body serves as a protective element. There are both single and double Internet sockets.

Computer sockets may differ in appearance, but their operating principle is the same. All of them are equipped with microknife contacts. As a rule, they are designed to cut through the insulation of conductors, after which reliable contact is established, since the process is carried out under a certain reinforcement.

Connecting a computer wall socket

Almost all manufacturers of computer sockets place a connection diagram inside, indicating the order in which the wires are placed, based on their colors. As a rule, both scheme “A” and scheme “B” are indicated. Scheme “A” should not be taken into account, but focus on scheme “B”.

First of all, proceed to install the case on the wall, positioning it so that the cable inlet faces up and the computer connector faces down. Although this installation option can be changed, depending on specific conditions, the outlet can be installed horizontally.

As you can see, connecting an Internet outlet is not a complicated operation and anyone can handle it. This may only take a few minutes. In this case, once is enough, although the first time it may not work, especially if you do not have the skills to handle wires.

In order not to suffer too much, it is better to watch the corresponding video, which shows and tells how to connect a computer outlet with 4 wires and with 8 wires.

Despite the different number of wires, the connection technology is the same.

Connecting an internal Internet outlet

The main task of the connection is to be able to correctly disassemble the Internet outlet, since each manufacturer solves this problem in its own way.

The most important thing is to disassemble it so that there is free access to the contacts with the microknives. It is in this part that the connection is made, after which the housing cover with the contacts is closed. Each model of such an outlet has its own method of assembly and disassembly.

If we take, for example, a Legrand computer socket, then in order to get to the place where the wires of the Legrand Valena RJ-45 socket are connected, you first need to remove the front cover. Inside the case you can see a white plastic panel with an impeller, where an arrow is drawn (see photo).

The handle on the panel is turned in the direction of the arrow, after which the front panel is removed. On the surface of the panel there is a metal plate with a pattern, from which you can determine which contacts and which wire should be connected. The color marking of twisted pairs is also indicated here. Before starting the connection, wires prepared for the connection process are threaded into the hole located on the plate.

To make it more clear, it is better to watch the prepared video.

You can also find a socket for connecting the Internet from Lezard. Here the design is completely different. The front panel is designed with screws, so to remove it, just unscrew these screws. As for its insides, everything here is secured with latches. To remove the insides from the body, you need to pick up a regular, small screwdriver and squeeze the clamps.

To get to the contact group and remove it from the housing, you need to press the latch, which can be found on top. As a result of such actions, you may end up with a box in your hands, from which you will have to remove the cover to get to the contacts. To remove the cover, just pry the side petals with a thin object. You still have to put in some effort, since the latch is quite elastic. At the same time, you need to remember that you are holding plastic in your hands and if you do not do everything carefully, you can break it.

For greater clarity, we suggest you watch the video tutorial.

In conclusion, it is worth noting that the presence of a corresponding video on the Internet simplifies the process of mastering various actions or carrying out work related to connecting computer sockets. Despite the fact that each outlet model is designed differently, the connection process is the same for all. The most important thing is to master the connection process yourself, associated with certain features. It would seem that it would be easier if the connection was made using twisting or soldering, which would be accessible to almost everyone. But at the same time, it would not be possible to ensure the compactness and accuracy of the connection itself. But such connections have their advantages: you wouldn’t have to stock up on jacks. Although, on the other hand, this connection method is more designed for professionalism, simplicity and speed, especially if you use a special tool.

And, nevertheless, if you have at least some skills in working with electrical wires, then such a connection does not contain any difficulties. Without inviting any specialists, you can actually install a computer network in your apartment or private house. Moreover, such specialists will charge a considerable amount for this.

If the Internet cable connector is broken, there is no need to call a technician to replace it. You can crimp everything yourself, just follow the instructions in this manual. It is suitable for any network equipment that uses twisted pair cable - the most common and cheapest. With proper dexterity, such a connection is made in 5 minutes; even a beginner, with absolute leisureliness, needs no more than 30 minutes.

You will need a twisted pair cable and an 8P8C (RJ-45) connector. An insulating cap can be purchased for each connector. It is advisable to have a tester and special crimping pliers - crimper. However, you can do it without such a tool, only the process will take a little longer, but then you definitely can’t do without a knife and a flat-slotted screwdriver. Its tip should be small - 10-15 millimeters in length.

The first modification of twisted pair cable was used in telephone networks; it is designated category CAT1. Any category from the fifth (CAT5) and above is relevant. The name of this wired connection comes from the fact that there are several pairs of wires inside the thick cable, and in each pair 2 cables are intertwined. This reduces signal transmission interference, which allows you to achieve a data transfer rate of at least 100 Mbit/s.

If there is a question of purchasing a new cable, then proceed from the following positions:

1. The higher the category (CAT), the faster and more reliable the data transfer. This is achieved through shielding - covering individual pairs and even wires with a sheath, as well as increasing the number of turns in a pair of wires. All these manipulations are done to protect against electromagnetic interference. In practice, the category CAT5e is most often purchased - the optimal ratio of price and quality.
2. Twisted pair cables have a limited length. This is a key disadvantage of this type of communication. High-quality connection is not guaranteed at a distance of more than 100 meters. Cables of advanced categories in this regard differ from simple fifth category in that they have relatively high speed over a short distance. For example, in CAT7a up to 100 Gbit/s at a distance of up to 15 meters, while in CAT5e up to 1 Gbit/s.
3. A standard wire contains 8 cores. However, there are cheaper options with four cores; they have a lower data transfer speed. The difference between them in the crimping scheme will be discussed in the corresponding block of the article.

The twisted pair network connector is correctly designated 8P8C, although the much more common name is RJ45. This connector is simple and cheap, so it’s better to immediately buy several pieces in reserve. In total, it has 8 contacts for a metal core, which are mechanically fixed. That is, wires are inserted into the contact sockets of the new 8P8C in the correct sequence, and then the connector body is compressed and a stable structure is obtained in which nothing hangs loose. Each groove has its own number.

It is necessary to understand the numbering of contacts if a four-core wire is to be crimped; for the more common eight-core wires, this is not so critical.

The crimper is a fairly simple tool. The main function is to create equal pressure on the entire connector. In addition, crimping pliers may also contain cutters (built-in blade, press), which quickly cut the wire or strip its outer sheath.

With a crimper everything will be easier, but this does not guarantee the quality of the crimp. The main factor is human hands, because you can even crimp the connector with your teeth.

Instructions for crimping twisted pair cables

First, cut the twisted pair cable at a right angle. All wires should be at the same level so that none of them protrude beyond it. Next, remove the outer shell to a length of 2-3 centimeters (more is possible). It is convenient to do this with a breaking thread - most cables have a nylon thread inside. It is enough to pull it firmly so that the insulation is easily removed and the wires inside are not damaged.

Divide the wires in pairs by color - like to like, one to one. Most likely you will have an eight-core wire, that is, there should be 4 pairs of the same color wires. After this, cut them evenly so that there is 1.3 centimeters from the outer insulation layer to the end of the core. This is important so that when crimping, the outer shell is also fixed and not dangling, which certainly will not add reliability to the structure.

After these preparations, proceed as follows:

• Decide on a crimping scheme - direct is preferable, but for details it’s worth reading the corresponding block of the article, which is just below.
• Carefully insert the wires into the connector according to the selected pattern. One track is intended for only one core, no twisting is allowed, the cores must lie freely in their own groove until it stops.
• Make sure that the outer insulation of the twisted pair is also inside the connector; if not, then shorten the part of the cable without the sheath.
• Carefully insert the connector into the corresponding socket of the crimper and squeeze its handles. There is no need to put in any special effort, the main thing is that the handles reach the stop; squeezing harder is useless.
• Don't forget to put the cap on the connector.

If it doesn't work out the first time, it's okay. A crimped cable becomes uncrimped in a second if you cut off the connector from it.

3 types are used:

• direct;
• cross;
• cantilevered.

Initially, a straight cable was used to connect heterogeneous network devices (router-PC), and the other two for homogeneous devices (router-router, PC-PC). That is, in the past it was necessary to use a suitable scheme. Today, not only computers, but also simple devices, such as a household router, automatically determine which crimping scheme is used. Therefore, it is most rational to crimp an eight-core wire using a straight pattern, just follow the color sequence.

If you have a wire with 4 cores, then this does not fundamentally change the circuit, except that the connection is made for the following connector grooves: 1, 2, 3, 6.

Crimping a connector without pressing pliers

How to crimp an Internet cable if there is no crimper? This procedure is completely simple and is performed according to the following algorithm:

• Everything is done in the same way as previously described. You should have a cable in your hands, the cores of which are correctly installed in the connector tracks.
• The connector is carefully placed on a flat surface with the latch down, the main thing is that it is fixed.
• On one of its edges you will see yellow latches in the depths - successively push them towards the core so that they touch and the core insulation layer does not interfere.
• Without turning the connector over, press it on the opposite side, where there will be a small slot. As a result, the entire twisted pair should be fixed by pressing the outer sheath of the cable with the plastic latch of the connector.

Let's summarize the instructions and highlight the key nuances:

1. Don't think too much about your cable choice. In most cases, the capabilities of mass-produced products are more than enough. Expensive cables are usually used for specific communication purposes.
2. Follow the color scheme for placing individual cores. You just need to carefully repeat what is indicated in the picture.
3. The connector lock should secure the cable without external insulation. Otherwise, there is a high probability that the crimping will need to be repeated after some time due to damage to the old one.
4. The ends of one cable must be connected in the same way. It is prohibited to use a direct crimping pattern at one end and a cross pattern at the other.
5. It is advisable to check the results of the work with a tester. Both ends of the cable are inserted into this device, after which a signal is passed through it. Of course, if the Internet still works after everything, then OK. However, in case of any problems, the tester will immediately display which core or pair has the problem - this significantly speeds up the repair procedure.
6. If there is no crimper, then perform the procedure slowly. It’s better to carefully do everything with one connector in 20 minutes than in turmoil in 40 minutes, ruining many connectors and even more nerves.