Hard disk and floppy drive:

PRIIDE and IDE1 and SECIDE and IDE2 represent the primary and secondary hard disk and optical drive interfaces

FLOPPY and FDD1 represent the floppy drive interface

Note: There are pin connection order indications around the interface, such as 1, 2, 33, 34, and 39, 40 digital indications. The red line of the floppy drive cable and hard disk cable we use is close to the 1 position.

CPU socket:

SOCKET-478 and SOCKET462, SOCKET370 indicates the number of pins of the CPU type.

Intel and AMD

To list the latest and older types, you can click on the link to the following article

The latest CPU socket types

Various CPU sockets and slots (before p4)

Memory slots:

DIMM0, DIMM1 and DDR1, DDR2, DDR3 indicate the memory type used.

Power interface:

ATX1 or ATXPWR 20-pin ATX power interface.

Dedicated 12V interface for ATX12VCPU power supply (2 yellow, 2 black, ***4).

ATXP5 memory power supply connector (colors are 1 red, 2 orange, 3 black, 6 sticks).

Fan interface:

CPU_FATN1CPU fan

PWR_FAN1 power fan

CAS_FAN1, CHASSISFAN and SYSFAN represent the chassis fan power interface.

FRONTFAN front chassis fan

REARFAN rear chassis fan

Panel interface:

F_PANEL or FRONTPNL1 front panel interface

p>

PANEL1 Panel 1

RESET and RST reset

LED semiconductor light-emitting diodes have positive and negative poles. When we connect it reversely, it will not emit light. Its normal working voltage is red, green and yellow, 1.8~2.5V, blue is about 4V, and white is 5V.

PWR_SW or PW_ON power switch

PWR_LED power indicator light

ACPI_LED advanced power management status indicator light

TUBRO_LED or TB_LED indicates acceleration status Indicator light

HD_LED or IDE_LED hard disk indicator light

SCSILEDSCSI hard disk working status indicator light

HD+ and HD- represent the positive and negative poles of the hard disk indicator light, others such as : MPD+ and MPD- and PW+ and PW-.

SPEAKER and SPK motherboard speaker interface

BZ1 peak buzzer

KB_LOCK and KEYLOCK represent the keyboard lock interface.

TUBROS/W acceleration conversion switch interface.

Peripheral interface:

LPT1 and PARALL represent printer interfaces

COM1 and COM2 represent serial communication ports, which are also external modem interfaces. The old method port mouse interface.

RJ45 built-in network card interface.

RJ11 built-in modem interface.

USB or USB1 and USB2, FNTUSB, etc. indicate the front or rear USB interface of the motherboard.

MSE/KYBD mouse and keyboard interface.

CD_IN1 and JCD represent the CD audio input interface.

AUX_IN1 and JAUX represent line audio input interfaces.

JAUDIO or AUDIO represents the onboard audio output interface. If your chassis has front headphone and microphone jacks, and the interfaces match the onboard AUDIO interface, you can conveniently use the front and rear audio outputs at the same time.

No need to pull it back and forth.

F_AUDIO front audio input and output interface.

MODEMIN1 has a built-in modem input interface.

Battery:

JBAT1 motherboard battery discharge jumper

BAT1 or BT indicates the motherboard CMOS information storage battery.

JP10 (generally close to the battery)

1-2

NORMAL

Normal use mode

2 -3

CLEARCMOS

Clear CMOS content

Network card startup permission:

JP4ONBOARDLAN

1-2ENABLE network card Remote startup allowed

2-3

DISABLE

Network card remote startup prohibited

Keyboard boot allowed:

If you want to use the keyboard boot function, you need to set the keyboard boot permission in CMOS and set jumpers on the motherboard.

Note: When the keyboard is powered by a 5VSB power supply, the keyboard and mouse power-on functions are allowed. However, when the computer is turned off (without unplugging the host power plug), the indicator light of the keyboard or optical mouse will remain on. .

JP1 (Keyboard power-on jumper is usually near the keyboard interface)

1-2

KEYBOARDPOWERONDISABLE

Keyboard power-on allowed

2－3KEYBOARDPOWERONENABLE

Keyboard power-on disabled

Doubler FSB jumper setting:

Motherboard model identification:

When we upgrade the motherboard's BIOS, we must correctly identify the motherboard model and PCB version number. Because some motherboards have the same model, but the chip may change during the production process, then there will be a difference in the PCB version number. Therefore, when upgrading the BIOS, be sure to download the appropriate BIOS code. The BIOS chip is stored in FLASHEEPROM. In order to save installation space, motherboards in the past two years have adopted square chips. The first pin mark of the square chip is a small dot in the middle of one side.

For example: GA-8IR533REV: 1.0 after 1.0 is the PCB version number.

Identification of sound card chip:

Most current motherboards have integrated onboard sound cards. When we install the motherboard driver, if we do not know the model of the sound card, we can open the case , carefully identify the words typed on the sound card chip to find the model number of the sound card. The sound card chip on the motherboard is about 6mm*6mm in size, and its surrounding pins are densely packed.

Motherboard USB:

The 5V power supply method of the onboard USB interface varies depending on the motherboard manufacturer. Some use the main 5V power supply, some use the 5VSB power supply of the secondary power supply, and some use the 5VSB power supply of the secondary power supply. can be changed using jumpers. The jumper position is generally near the USB interface.

Note: If the auxiliary power supply 5VSB is used for power supply, because it uses the 7805 integrated circuit to stabilize the voltage, the maximum output current is 1.5A, but in fact the maximum output current is only 500MA without a heat sink. The power supply also Provides power for keyboard startup, modem remote wake-up, and network card startup power. Therefore, when we use USB interface power-consuming peripherals (such as: mobile hard disk, USB scanner), the mobile hard disk may not work properly due to insufficient current. In this case, we can use the keyboard or mouse interface that comes with the mobile hard disk. , getting part of the current from the keyboard or mouse interface to work properly. An external power supply can also be used.

Also: The front USB interface and the rear USB interface of the motherboard may have different power supply methods. This will cause a certain USB peripheral to work normally when using the front USB interface, but It will not work properly when using the rear USB port. At this time, when solving such problems, Second Computer Network believes that it is best to carefully read the operating instructions of the motherboard and peripherals.

This article comes from the Computer Knowledge Information Network. Thank you for your support!