1

00:00:00,933 --> 00:00:06,366

Hello everyone, in this lesson we will identify the ports on the desktop mainboard

2

00:00:07,266 --> 00:00:13,566

First of all, the first one is the CPU socket in the middle of the mainboard.

3

00:00:14,266 --> 00:00:18,533

Its role is to connect the mainboard and CPU

4

00:00:19,800 --> 00:00:23,533

Different series of mainboards have different CPU specifications

5

00:00:24,100 --> 00:00:29,333

For example, the pins of the CPU socket of the Intel mainboard are on the mainboard,

6

00:00:29,533 --> 00:00:34,366

while the pins of the CPU socket of the AMD mainboard are on the CPU.

7

00:00:35,700 --> 00:00:42,066

To the right of the CPU socket is the memory socket

8

00:00:42,066 --> 00:00:45,466

The memory slot is mainly used to connect the memory and the mainboard

9

00:00:45,933 --> 00:00:49,600

Different series of memory correspond to different memory slots

10

00:00:50,266 --> 00:00:56,366

Currently commonly used memory series are DDR3, DDR4 and DDR5

11

00:00:57,933 --> 00:01:03,200

The three slots below the CPU slot are PCIE slots

12

00:01:04,200 --> 00:01:09,666

PCIE slots are used to connect high-speed devices, such as graphics cards

13

00:01:10,700 --> 00:01:13,800

At the same time, there are several types of PCIE slots,

14

00:01:14,066 --> 00:01:17,533

for example, there are two types in the picture

15

00:01:17,966 --> 00:01:24,266

The longer one above is PCIE X16, which is a 16-speed PCIE slot

16

00:01:25,166 --> 00:01:31,100

The two shorter ones below are PCIE X1, which is a 1-speed PCIE slot.

17

00:01:34,200 --> 00:01:41,666

There are two power connectors on the mainboard, they are mainly used to supply power to the mainboard

18

00:01:43,000 --> 00:01:49,366

The power interface located at the upper left corner of the CPU socket is used to supply power to the CPU

19

00:01:49,766 --> 00:01:54,466

The power interface located at the upper left corner of the CPU socket is used to supply power to the CPU

20

00:01:56,900 --> 00:02:00,566

The four interfaces circled in the figure are SATA interfaces

21

00:02:02,100 --> 00:02:06,466

The SATA interface is mainly used to connect the hard disk and the mainboard

22

00:02:07,400 --> 00:02:10,600

Although the appearance of the SATA interface is the same,

23

00:02:10,800 --> 00:02:17,300

some SATA interfaces in different positions of the mainboard may have different transmission rates,

24

00:02:17,766 --> 00:02:20,966

so you can only refer to the manual of the mainboard

25

00:02:22,100 --> 00:02:26,266

The slot circled in the next picture is a CMOS battery holder,

26

00:02:26,966 --> 00:02:29,933

which is mainly used to hold button batteries

27

00:02:31,000 --> 00:02:35,033

These are the larger sockets on the mainboard

28

00:02:35,400 --> 00:02:38,166

Let's take a look at some of the smaller sockets on the mainboard

29

00:02:39,766 --> 00:02:44,400

As shown in the figure, these two interfaces are the interfaces of the fan or the water pump,

30

00:02:44,933 --> 00:02:48,000

and are used to connect the cooling fan or the water pump.

31

00:02:50,100 --> 00:02:52,566

Their names are not fixed

32

00:02:52,933 --> 00:02:55,900

There are 4 common names for them

33

00:02:57,066 --> 00:03:02,200

The following two are generally used to connect the water pump

34

00:03:03,400 --> 00:03:08,800

The interface located under the mainboard is a USB3.0 interface,

35

00:03:09,266 --> 00:03:14,533

which is mainly used to connect to the USB3.0 interface on the front panel.

36

00:03:15,366 --> 00:03:20,766

Only plug in this interface, the USB3.0 interface on the front panel can be used

37

00:03:22,000 --> 00:03:29,900

The following four types of interfaces are not easy to distinguish, they are all interfaces with needles

38

00:03:30,266 --> 00:03:35,000

We can only remember their names in order to distinguish

39

00:03:36,766 --> 00:03:38,933

e.g. front audio interface

40

00:03:39,100 --> 00:03:42,700

It is used to connect the audio interface on the front panel

41

00:03:42,933 --> 00:03:46,300

Its common names are AUDIO or AAFP

42

00:03:48,500 --> 00:03:51,066

Front panel or jumper interface

43

00:03:51,400 --> 00:03:55,266

This interface is mainly used to connect the power button, reset button,

44

00:03:55,433 --> 00:03:58,166

power light, and hard disk light

45

00:03:58,933 --> 00:04:01,600

Its common name is JFP1 or PANEL

46

00:04:04,800 --> 00:04:05,966

COM interface

47

00:04:06,100 --> 00:04:09,600

COM interface is generally used to connect serial devices

48

00:04:09,766 --> 00:04:12,500

This interface is generally not used

49

00:04:13,366 --> 00:04:16,500

The last interface is the diagnostic card interface

50

00:04:17,133 --> 00:04:21,100

The diagnostic card interface is an interface that can be used to connect a diagnostic card

51

00:04:21,766 --> 00:04:28,000

Its common names are TPM, LPC, SPI and DEBUG

52

00:04:28,766 --> 00:04:32,600

Of course, these interfaces can not only be used to connect diagnostic cards,

53

00:04:33,433 --> 00:04:36,033

but also can be used to connect some special equipment

54

00:04:37,333 --> 00:04:43,766

But for our maintenance, generally these interfaces are used to connect the diagnostic card

55

00:04:45,666 --> 00:04:51,833

Finally, let's talk about the connection method of the jumper interface on the front panel, we need to remember

56

00:04:52,500 --> 00:04:59,933

This interface is used to connect the power button, reset button, power light, and hard disk light

57

00:05:00,500 --> 00:05:07,500

Some mainboards will mark the connection diagram of the interface

58

00:05:08,300 --> 00:05:10,566

For example the one on the left

59

00:05:11,466 --> 00:05:14,300

Its connection is generally fixed

60

00:05:15,000 --> 00:05:17,666

There is a formula that can help us remember

61

00:05:18,666 --> 00:05:23,166

There is an empty pin here in the interface, we call it a missing pin

62

00:05:23,566 --> 00:05:26,966

The formula is: next to the missing needle is the power supply, opposite to the power supply is reset,

63

00:05:27,133 --> 00:05:34,066

next to the power supply is the power light, and opposite to the power light is the hard disk light

64

00:05:34,733 --> 00:05:40,166

According to this formula, we can know that the two pins next to the missing pin are the power supply,

65

00:05:40,166 --> 00:05:42,266

that is, the power button

66

00:05:43,166 --> 00:05:47,966

Opposite the power supply is reset, which is the reset button

67

00:05:48,933 --> 00:05:54,000

Next to the power supply is the power light, which is the power indicator light

68

00:05:54,900 --> 00:05:59,800

Opposite the power light is the hard disk light, which is the hard disk work light

69

00:06:00,900 --> 00:06:03,200

When connecting the switch key and the reset key,

70

00:06:03,366 --> 00:06:06,733

it is not necessary to distinguish between the front and back

71

00:06:07,300 --> 00:06:12,300

When connecting the power light and the hard disk light, it is necessary to distinguish the front and back

72

00:06:13,300 --> 00:06:17,066

Generally, the one near the foot is the positive pole.

73

00:06:17,900 --> 00:06:19,533

If you can't remember the positive and negative poles,

74

00:06:19,600 --> 00:06:24,100

you can first plug the power light and hard disk light in one direction

75

00:06:24,600 --> 00:06:27,733

If the light is not on, just turn it in another direction

76

00:06:27,800 --> 00:06:29,966

This operation will not damage the mainboard

77

00:06:31,166 --> 00:06:35,500

These are the common interfaces of the desktop