What kind of power cord is this?

By the way, as a novice, it is not easy to really assemble a computer from scratch. Maybe you know where the CPU should be inserted and where the memory should be inserted, but many novices don't know how to start when they encounter rows of complex jumpers.

Opening the key is not mysterious.

You still remember the first time you saw the computer installed, JS plugged in CPU, memory, graphics card and so on. Plug it into the motherboard, then take out his key from his pocket (or just find a screw) and touch it on the edge of the motherboard, and the computer will start working? Are you surprised (I was surprised when I first saw it)! Facing a brand-new motherboard, JS can always connect countless jumpers on the motherboard within 1 or 2 minutes without looking at any instructions. Do you think he is a master? Hehe, after reading today's article, you will feel that it is not worth mentioning, and you can remember it completely with a little note, so that you can get the secrets of all jumpers on the motherboard without reading the instructions.

This is called a real jump shot.

First, correct a conceptual problem. In fact, the rows of pins that need to be connected on the motherboard are not called "jumpers" at all, because they can't reach the function of jumpers at all. The real jumper is two/three pins, and there is a small "jumper" on it, which should be called "jumper" and can play the role of hardware changing settings, frequency and so on. The pin connected to the chassis can't play this role at all, so it should be called panel connection pin in the true sense, but because it is not much different from "jumper" in appearance, we often call it "jumper".

After reading this article, it will be very easy to connect this handful of lines.

As for who connected the pins of the tube screen for the first time, I believe no one can be sure. However, since everyone is used to it, we will not pursue it, so in this article, we will call it panel connection pin jumper.

To make it easier to understand, let's start with the cables in the chassis. Generally speaking, text is used to mark the definition of each group of connecting wires in the chassis, but how to identify these marks is the first problem we need to solve. In fact, the labels of these lines are abbreviations of relevant English, which is not difficult to remember. Let's take a look at it one by one (the relevant introduction is below each picture)!

Power switch: power switch

English full name: Power Swicth

Possible names: power supply, power switch, on/off, power setting, PWR, etc.

Function definition: the power-on button on the front of the chassis

Reset/restart switch: reset switch

English full name: Reset Swicth

Possible names: reset, reset switch, reset setting, RST, etc.

Function definition: reset button on the front of the chassis

Power indicator:+/-

Possible names: power LED, PLED, PWR LED, SYS LED, etc.

Hard disk status indicator: hard disk indicator

English full name: hard disk drive light emitting diode

Possible names: high-definition LED

Alarm: speakers

Possible name: SPK

Function definition: motherboard abnormal alarm

Needless to say, the front USB interface is generally a whole.

Audio cable: audio

Possible names: FP audio

Function definition: front audio of chassis

After reading the simple graphic introduction above, you must already know the definition of these lines on the chassis. In fact, it is really simple, just a few very, very simple English abbreviations. On the next page, we will learn about the "jumper" on the motherboard.

In fact, the cables on the chassis are not terrible. More than 80% beginners feel that the most headache is the definition of jumper on the motherboard, but is it really that terrible? The answer is no! Moreover, there are still many rules, and it is precisely because of these rules that we can draw inferences. No matter what brand of motherboard, we can insert complex jumpers without looking at the instructions.

● Where is the first needle of the jumper?

To learn how to jump wires, you must first know where to start counting them. This is actually very simple. On the motherboard (any card device is the same), there is always a thick printed frame at both ends of the jumper, and the jumper should be counted from here. After finding this thick printing frame, just count it from left to right and from top to bottom. As shown above.

● 9 Definition of PIN switch/reset/power light/hard disk light

This motherboard is the same as the motherboard in the above picture, and the switch/reset/power light/hard disk light is defined by 9Pin.

9-9Pin switch/reset/power light/hard disk light jumper is the most popular way at present, which is adopted by more than 70% brands in the market and gradually becomes standard, especially the motherboards introduced by several major manufacturers for channel manufacturers, which is as high as 90%.

Schematic diagram of 9-pin panel connection jumper

The above picture is a schematic diagram of the switch/reset/power light/hard disk light defined by 9Pin. It should be noted here that the 9-pin is undefined, so it is not necessary to insert this when inserting the jumper. When connecting, just follow the schematic diagram above. It's simple. Among them, the power switch (Power SW) and the reset switch (both positive and negative) need to distinguish the positive and negative poles, and the positive pole is connected in the direction close to the first needle (that is, the direction of thick printed lines).

Can you tell the positive and negative poles of this wire?

I almost forgot to mention that it is also very simple to distinguish the positive and negative poles of the wires on the chassis. Generally speaking, the colored line is the positive electrode, while the black/white line is the negative electrode (grounded, sometimes denoted by GND).

After learning and remembering the contents of this page, you can connect the switch/reset/power indicator/hard disk indicator of most motherboards. Now, you can unplug this part of the cable from the chassis and plug it in again. Be sure to remember the arrangement! For your convenience, here we summarize the position of switch/reset/power light/hard disk light defined by 9Pin in four sentences:

1, the power supply inserted next to the missing pin.

2. Plug in the power supply to reset.

3. Insert the power lamp next to the power supply, and the negative electrode is close to the power jumper.

4. Insert the hard disk lamp next to the reset, and the negative electrode is close to the reset jumper.

Having said so much, I believe you must remember!

● Representative wiring mode of ASUS motherboard.

Many friends will give priority to ASUS motherboard when installing the machine, but the wiring rules of ASUS motherboard are generally different from those we talked about on the previous page, but they are also very representative. Let's talk about it separately here.

The above picture is a schematic diagram of the wiring of ASUS motherboard (red dot means no pins), which is actually easy to remember. It should be noted that some chassis PLED is a 3-pin plug, but there are actually only two wires on it, so it needs to be connected to the 3-pin PLED pin. The dotted line in the above picture is specially connected to the 3-pin PLED plug.

Let's find the law of this. First of all, the rules of speakers are the most obvious. When 4Pin is together, nothing can be plugged in except the speaker. So when we see this pin in the future, we must first determine the position of the speaker. Then, if there are three pins together, you must connect the power indicator, because only the power indicator may have three pins; Third, 90% of power switches are two independent pins in the middle. Of course, you can also short these two pins yourself. If it is turned on, it proves that it is plugged in, and the Reset next to it can also be tested in the same way. The rest, of course, is the hard disk light. Note that the power indicator and the hard disk working status indicator should be divided into positive and negative poles. In fact, there is nothing wrong with reverse insertion, but it will not light up and will not cause damage to the motherboard.

● Connection modes of other irregular motherboards:

In addition to what we mentioned earlier, the wiring rules of some motherboards are not obvious, but these motherboards are clearly marked next to the wiring except the wiring mode (in fact, most motherboards are marked), and the pin bases are distinguished by color, as shown in the above figure. When you encounter such a motherboard, just plug in the line according to the logo.

Now, I believe you have understood the secret of the installer using the key to start the machine. In fact, it is a short-circuited power supply corresponding pin, which is very simple.

● Front USB

The connection mode of the front USB is actually very simple. At present, the general chassis has made the wiring of the front USB into a whole. You just need to find the corresponding pins on the motherboard and plug them together. Generally speaking, at present, the USB pins on the motherboard are all 9Pin connections, and there is an obvious USB 2.0 logo next to them.

Finding the front USB pin on the motherboard is also simple. Motherboards now generally have two or more sets of front USB pins (as shown above). When looking for pre-USB, as long as you see this 9-pin pin and there are two or more pins together, you can basically confirm that it is a pre-USB pin and there will be a logo near the motherboard.

At present, the pre-USB connection search on the general chassis is integrated in this way. There are 8 wires on the top * * *, namely VCC, data+,data-and GND. Needless to say, this integration is plugged in. If they are separated, they are usually connected in the order of red, white, green and black. As shown above, although this line is integrated, it is also sorted by red, white, green and black.

Pre-audio connection method

Because the front stereo has only become popular in the past two years, not to mention users, even many installed technicians are not very good at connecting the front audio cable, and even many JS directly indicate that they will not make any noise after connecting the front stereo. So is the front audio so difficult to pick up? Let's have a look.

Judging from the motherboards currently on the market, the ordering of the front audio pins has become a fixed standard (as shown above). As can be seen from the figure, the pre-audio * * * has 9 pins, but a * * * occupies the position of 10 pin, and the eighth pin is left blank.

The picture above is a typical front audio connection. In fact, the front stereo only needs to be connected with 7 lines, which is the 7 lines in the above picture. At the pin end of the motherboard, as long as you know the definition of each pin, it is good to connect the front audio. Let's look at the definition of each pin on the motherboard:

1 Microphone in/Microphone (Microphone in)

2——GND (ground)

3—— Microphone power/Microphone VCC/ Microphone bias (Microphone voltage)

4-no pin

5—— Line output FR (right channel front audio output)

6—— Line output RR (audio output after right channel)

7—— No pin

8—— No pin

9——LINE OUT FL (front audio output of left channel)

10-Line output RL (used for audio output after channel)

When connecting the front stereo, just connect the corresponding cable as defined above. In fact, connecting 5Pin with 6Pin, 9 pin and 10Pin with a line can achieve the same effect in some cases.

It seems that there are many lines, but they are also easy to remember. You might as well follow the method I remember. First of all, remember the first three, the first is the microphone input, the second is the ground, and the third is the microphone voltage. Then the 5th and 6th needles are inserted into the right channel, and the 9th needle and 10 needle are inserted into the left channel. The number from top to bottom is Mic in, Mic voltage, right channel, left channel, plus a ground. Is it easy to remember this?

A lot of wiring is actually integrated, so don't worry about wiring order.