What Is Motherboard | Components | Types | Form Factors

What Is Motherboard | Components | Types | Form Factors

Sometimes, it is referred to as mainboard, mboard mobo, mobd backplane board, baseboard principal circuit board systems board or logic board in Apple computers. The motherboard is a printed circuit board that forms an essential component of a computer. It is the largest board on the computer chassis. It is responsible for power distribution and communication between RAM, CPU as well as all the other computer hardware components.

Overview of the Motherboard.

Motherboard components.

Overview of Motherboard

A motherboard connects all the components that make up computers such as CPU (CPU) as well as memory (RAM) as well as the hard drive as well as a video card. There are a variety of motherboards designed to suit different types and sizes of computers.

Each motherboard type is specifically designed to function with certain types of memory and processors, which means they won’t work with every type of processor or of memory. However hard drives are usually universal and can be used with most motherboards, regardless of their kind or the brand.

Below is a photograph of the ASUS P5AD2-E motherboard. It has labels for the major components. By clicking the image, you can be directed to an even bigger and more detailed version.

Computer motherboard

The motherboard?

The motherboard of a computer is within the computer case. It is where the majority of peripherals and components of computers connect. For tower computers the motherboard is situated either on the right or left part of the tower. It is the largest circuit board.

Motherboard components

Below are links to websites that provide additional information for each component of the motherboard discussed in the previous section. Links are listed in order of clockwise beginning at the top left edge of the picture. Parts that aren’t labeled in the image above can be located in later sections on this page.

Slots for expansion (PCI Express, PCI, and AGP)

  1. 3-pin case fan connectors
  2. Back pane connectors
  3. Heat will eventually sink.
  4. 4-pin (P4) power connector
  5. Inductor
  6. Capacitor
  7. CPU socket
  8. Northbridge
  9. Screw hole
  10. Memory slot
  11. Super I/O
  12. ATA / IDE primary connection for disk drives
  13. 24 pin ATX Connector for power source
  14. Serial ATA connections
  15. Coin Cell Battery (CMOS Backup battery)
  16. RAID
  17. System panel connectors
  18. FWH
  19. Southbridge
  20. Serial port connector
  21. USB headers
  22. Jumpers
  23. Circuit integrated
  24. 1394 headers
  25. SPDIF
  26. CD-IN

The following list includes the links to parts that are not in the above image or were on older motherboards of computers.

  • BIOS
  • Bus
  • Memory for cache
  • Chipset
  • Diode
  • Dip switches
  • Electrolytic
  • Connection to a Floppy
  • Fuse
  • Game port as well as MIDI header.
  • Internal speaker
  • Keyboard controller
  • LCC
  • Network header
  • Expansion slots that are no longer needed: AMR, CNR, EISA, ISA, and VESA.
  • Memory slots obsolete: SIMM.
  • Onboard LED
  • Parallel port header
  • PS/2 header
  • Resistor
  • RTC
  • Header of the serial port
  • SCSI
  • Solenoid
  • Regulator of voltage
  • VRM (voltage regulator module).

Types of Motherboards and form factors

As computers get more advanced, they also have motherboards. Below is a listing of different types of motherboards with additional information on each one, including ATX that is by far the most commonly used.

  • AT
  • ATX
  • Baby AT
  • BTX
  • DTX
  • LPX
  • Full AT
  • Full ATX
  • microATX
  • NLX

How many ports, connections or slots are there on the motherboard?

There is no standard for the number of ports, connections or expansion slots available on motherboards. The best way to figure out the number of ports, connections or slots accessible on your particular motherboard would be to check the specifications in the manual. If you’ve lost, or have thrown away the motherboard’s manual You can usually download a PDF version for free from the official website of the manufacturer.

What do I do to find out the motherboard of my computer?

What are the reasons why the connections and slots different hues?

The ports, slots and connections on motherboards could be color-coded to determine the kind of port, slot or connector. For instance, in our motherboard image it is evident that the IDE connectors have different colors to identify those that are the main and second connectors. If the memory slots have different colors, this indicates that the slots have dual channels and that memory slots must be placed within the same channel (color). Check out iball 4g data card price 

For instance, in the image the yellow memory slots are channel A while the black memory slots are Channel B. B is the one with black slot. If you only wanted to install two memory sticks it would be best to place both within channel A (yellow slot) to ensure optimal performance.


Check out our color-coded pages for more information as well as examples of the color that the port back on your motherboard.

What is the connection of a motherboard to the computer case?

The motherboard of a computer connects to a computer desktop case by using standouts. After the motherboard is connected in the enclosure, other devices can be connected directly to the motherboard, or to an expansion card.

Was the motherboard that was first invented?

It was the first motherboard thought to be one that was used for the IBM Personal Computer, released in 1981. In the beginning, IBM called it a “planar” instead of an actual motherboard. This IBM Personal Computer along with the motherboard it contained was to establish the standard for IBM-compatible hardware in the computer industry in the future.

There isn’t anything like a fatherboard when it comes to the computer. There is however an item as a daughterboard.

How did the motherboard come to be named?

The daughterboards mentioned in the previous paragraph comprise circuit boards which are connected to a single central circuit board, it’s a motherboard. The smaller boards are considered as the main motherboard’s “children,” hence the name motherboard.

What is the difference between Dell, HP, and other OEM motherboards?

It’s true, OEM motherboards from manufacturers such as Dell and HP are a bit different from other motherboards available from a store. An OEM develops their motherboard to suit their specific requirements for each model of computer. Certain OEMs might even implement significant changes that are not compatible with the standard motherboard design. Check out asus p5kpl-am/ps motherboard price

 While an OEM motherboard might have its variations, they usually appear identical. If there haven’t been a lot of changes, it could make sense to substitute the OEM motherboard with an retail motherboard. If you have OEM computers that have a lot of differentiators that require replacement it is necessary to purchase a replacement that is from an OEM as well as a third party that sells used computer parts.