Connecting the power supply to the computer. How to properly connect the power supply to the computer

Let's start with the largest cable. This is the main power cable motherboard, with 24-pin ATX connector. It must be connected to the next socket on system board(indicated in the figure).

The cable has a latch (see figure below) that allows you to remove the cable from the connector.

If you are using SATA, then you need to connect with a thin black power cable (see picture below).

In this case, I will use food for IDE drives. It must be positioned correctly.
If we look at this cable closer, we will see (see image) that the corners are cut off. This serves to ensure that the cable is inserted correctly, and not vice versa and the device does not burn out. However, there are cases when the cable is connected the other way around.

That's it, power is connected to the disk.

CD/DVD drive

On the rear panel of system power supplies there are many sockets designed to connect the main components computer system. Connecting them is not difficult at all, given that all plug-in sockets have a different shape.

How to connect wires to the system unit

Our task is to connect cords from external peripherals to the system unit. The cords are connected to the motherboard panel, video card, power supply, internal modem, depending on the devices installed in the computer. Some connectors have small protrusions, so you do not need to try to hard connect them to the socket.

Important! All connections (except USB devices) must be made with the computer turned off. So, you need to move the switch from the “1-on” position to the “0-off” position. This turns off the power from the system unit.

Keyboard and mouse

Let's start by connecting the keyboard and mouse. Their connectors are identical in shape and have a key inside that simplifies connection. It is undesirable to make a mistake when connecting them, since there is a risk of certain damage: the mouse, keyboard, or the controller ports themselves on the motherboard are burned.

In addition, it should be noted that PS / 2 ports still have differences - these are different markings. The keyboard is usually marked purple, and the mouse is green. The connectors on the back of the motherboard are connected in the same way, each to a socket of the same color.

For more modern computers PS / 2 port can be two-color (half lilac, half green). This means that you can insert both a mouse and a keyboard. Since the latter have USB connectors. PS / 2 ports work only after rebooting the computer.

An old-style comport mouse or some kind of comport device can also be connected through the output, as from a video card, with the only difference being that its pins are external. The output is used, for example, for an old printer, stationary industrial scales or other equipment designed specifically for this port.

Additional Information. Cord connectors have a guide pin that must be aligned with the appropriate socket. When inserting, lightly press on the connector to lock the position. Another cord is also connected to the mouse connector.

USB connections

For USB connections wires from external USB device(printer, keyboard, mouse) you can use any of the USB ports on the rear panel. The USB connector has a special design, which eliminates its incorrect connection. USB cord marked special badge, which can be seen, and next to the connector.

If the Internet goes through a wire, and not through Wi-Fi, then the connector from home network plugs into the network card slot. LAN card may be a separate fee.

Acoustic system

The connector from the speakers (usually green light) is connected respectively to the green connector of the audio outputs, from the microphone ( Pink colour) - in pink. Acoustic system, for example, a 2.1 specification system is connected with one cord to sound output (of blue color) on the rear panel. You can refer to your motherboard reference documentation to determine the correct output.

Mains power cable angled

Before connecting the cord to the power supply connector, you should once again make sure that the switch on the back of the power supply is in the “off” position. Then connect the power cable to the right angle connector on the power supply and return the switch to the "on" position. Connection outer wire mains supply is completed.

Note! The AC power cable for the computer can act as a wire to supply 220V power to a monitor, PC, or other equipment. The 3-pin female connector has a 900 cable outlet. This angled design of the connector minimizes the space occupied by the connected cord.

Computer monitor power cable

The cable for connecting the monitor to the computer is connected to the corresponding output of the video card. On some processors, there may be two such outputs: for the integrated video card and power for the monitor. The connector on the cord has a certain shape, which eliminates its incorrect connection. It is fixed in the connector with two clamps.

After all the peripherals are connected, the wires are neatly placed, and there is no confusion in them, you can connect the cable to the network, click the toggle switch.

How to connect the wires to the front board

Many people have difficulty connecting wires to the motherboard. In fact, several blocks of pins are important:

• orange - episyspeaker, the same squeaker that beeps, signaling the passage of POST codes or a malfunction at startup;
• red - POWER button that turns off / on the computer;
• blue - hard drive signal with a blinking light;
• green - REZET reset button;
• gray - built-in open case sensor;
• purple - POWER LET colored light that indicates the system is on.

By the type of connection to these blocks, the connectors are 2- or 3-pin. Each of them has its own marking. An arrow on one of the pins indicates a positive contact.

It is advisable to observe the polarity of some pins when connecting. Some manufacturers specifically suggest where the plus is and where the minus is, so that there is no confusion with polarity. The cross is a plus. If you position the motherboard so that the inscriptions are read, all positive contacts will be on the left.

So, we have considered rear panel system unit, and to which connector what needs to be connected. The article is intended for beginners and inexperienced users. Some connectors may not be in view of the fact that each system unit has its own characteristics, or the computer model is outdated.

Today, USB connectors are considered the most common. Despite the great variety peripherals personal computers, they all interact with the processor and RAM in roughly the same way.

Video

Don't underestimate the importance of a computer's power source. good block nutrition serves as a cornerstone of sustainability and reliable operation computer. However, it happens that for some reason the power supply needs to be replaced. But don't be afraid. Replacing it is a surprisingly simple process. It's harder to get it right.

How to turn off your old power supply

You will need to disconnect all cables that go from the power supply to the motherboard.

Note: the main 20 or 24 pin connector is most often fixed with a key. Move the key back before removing the connector to avoid mechanical damage board or connector.

Also be sure to remove the four or eight pin CPU power connector located next to the CPU socket on the motherboard (not all motherboards have one).

In order not to get confused when connecting, you can take a picture of the wiring of the power cables. This way you will be sure which cable is connected to which components.

After disconnecting each cable, remove the power supply from the case to avoid tangling it with other cables. This will also make sure that all power cables have been disconnected.

To remove the power supply, remove the screws that hold it in place. In most cases, there are only four screws, but designs may vary, depending on the manufacturer.

Installing a new power supply

Make sure your power source is strong enough to fully power your computer. CPU and video card will use highest power. If there is not enough power, your computer may run slowly or not start at all.

Make sure the power supply you buy will fit your form factor. Usually it is ATX or mATX.

Turn the computer case on its side. This provides best access to the location of the power supply.

Open the computer case. In order to access the power supply, you may need to remove some of the PC components. Most often it is the CPU cooler.

Install the power supply in the computer case. Most modern cases have a special chassis that greatly simplifies installation. If not, install new source power supply, just like the previous one was located.

Make sure all fans on the power supply are not blocked and that it aligns with all 4 screws on the chassis. If this is not the case, then the power supply may not be installed correctly.

Tighten all fixing screws outside and inside the case.

Connect the connectors. After the computer's power supply is fixed, you can start connecting the power cables to the computer's motherboard.

Note: make sure no components are left out and place the wires so they don't get in the way of the coolers. If you have unused cables from the power supply, carefully fold them to the side (if you have a cable tie, you can use it).

Connect the 20/24 pin connector to the motherboard. This is the largest connector on the power supply. Most modern motherboards require a 24-pin connector, and older motherboards will only use the first 20 pins. Some power supplies have a detachable 4-pin connector to make connecting older motherboards easier.

Connect 12V power to the motherboard. Older motherboards use a 4-pin connector, while newer motherboards use an 8-pin. It provides power to the processor and should be clearly labeled on the cable or in your power supply documentation.

Connect your video card. Graphics systems middle and high class require one or more 6- and 8-pin connectors. They will be labeled as PCI-E.

Close the cover of the system unit. Plug in the power supply and make sure the switch on the back is turned on.

Turn on your computer. If everything is connected and working properly, the fan on the power supply should turn on and your computer will boot into normal mode. If you hear sound signal and nothing happens, then most likely something inside is not connected correctly or the power supply is not providing enough power to your components.

The power supply can be called the "heart of the computer", because without it, even the most sophisticated hardware will not work. It powers the motherboard, video card, processor, hard drive and all other components. Power supplies differ from each other in power, and with a systematic update of the hardware of the computer, it may be necessary to replace the power supply. This is not difficult to do, but many users are frightened by the abundance of wires that come directly from the power supply itself. There is nothing complicated about them, and below we will take a closer look at how to remove old block power supply, install a new one in its place and which of the wires is used for what.

How to turn off the power supply

Before installing a new power supply, you need to disconnect the old device from its place. This is done very simply. The power supply itself is located in the upper part of the system unit case, more often at its end. If you remove the cover from the case, you can see that a lot of wires go to the power supply. You can remove the power supply as follows:

How to connect a power supply to a computer

Connecting the power supply to the computer is almost the same as disconnecting, but in reverse order. It is important here to correctly connect all the wires coming from the power supply to the required connectors. Consider connecting the power supply in series:

When all the connectors are connected, you can turn on the computer. Make sure the switch on the power supply itself is in the On position. If all connectors are connected correctly, the computer should start. If it doesn't, check that the connectors are connected correctly and that they are all securely fastened.

Self assembly personal computer- this is not only an interesting activity, comparable to playing a constructor, but also great way save a decent amount service center this service costs an average of 10% of the cost of all components).

An additional reward for accuracy and consistency in the performance of work will be a perfectly working computer and a sense of pride in your achievements.

The assembly of the system unit begins with connecting the main PC components (video card, hard drive, processor, power supply, etc.) to the motherboard.

At this stage, questions arise extremely rarely, since all connectors and plugs are made in such a way that it simply will not work to confuse something in places or connect it on the wrong side.

When all the "iron" is arranged, it is necessary to connect with motherboard the body of the system unit itself. On it are withdrawn important elements controls and control indicators.

These are the power buttons and forced reboot PC (Reset), as well as the power indicators and work hard disk.

Wires with miniature connectors depart from each of the listed elements. They must be put on the corresponding plugs on the motherboard.

To make it clear what function a particular wire is responsible for, manufacturers put the following on each mini-connector conventions:

• Power SW (Power Switch) - connector that comes from the power button (Power). Pressing this button starts the computer;
• Reset SW (Reset Switch) - connector coming from the forced restart button of the computer;
• power led- PC on/off indicator connector;
• HDD Led - wire coming from the indicator hard state PC disk;
• SPEAKER - connector for connecting a system speaker ("tweeter");
• HD Audio - microphone and headphones;
• USB - USB connector.

We connect the case buttons to the motherboard

For the right connections Power buttons and reset to motherboard you need to have the manual handy. On the board diagram, you need to find information about the location of the contact block.

In most cases, manufacturers refer to it as "F_Panel", "Front Panel", or simply "Panel". If the instruction is lost, you just need to carefully examine the motherboard and find on it this group connectors.

1. First, connect the power button connector to the board power supply SW (Power Switch). The place for it on the motherboard is designated as "PWR_BTN". Since this is a button, not an indicator, the polarity of connecting the power button to the motherboard does not matter. The power button cable can be connected in either direction.
2. Next, we connect the forced reset button Reset SW (Reset Switch). The location for this connector on the motherboard is labeled "Reset" or "RESET_SW" and is located directly below the power button connector. In this case, the polarity also does not matter.
3. We connect the indicators of the system unit to the motherboard
4. Focusing on the diagram from the instructions or the symbols printed on the motherboard, you need to connect the display connectors.

When connecting the indicators, it is important to observe the polarity, otherwise they simply will not burn. On the board itself, the polarity is indicated by the symbols "+" and "-".

It should also be present on the connectors. If it is not there or not visible, then you should use the hint: the white wire is a minus, the colored wire is a plus.

The place for the PC on / off indicator connector (Power Led) on the motherboard is designated as "PWR_LED", for connecting the HDD Led connector - "HDD_LED".

VIDEO INSTRUCTION

If, after starting the computer, any of the indicators does not work, simply reconnect the connector by turning it to the other side.

Similarly, other connectors coming from the system unit case are connected to the motherboard - SPEAKER, HD Audio and USB.