What does a motherboard do in PC

A motherboard is the main circuit board that connects all of the components of a computer System. It connects the CPU, RAM, storage devices, and other components like graphics cards, sound cards, etc. The motherboard is in charge of managing and organizing the data and power flows between various components.

It also has expansion card slots and connectors for input/output devices such as USB ports, audio jacks, and Ethernet ports. The motherboard is an important part of a computer System.

Role of Motherboard in your PC

What does a motherboard do

The motherboard is an important component of Computer System. Its main function is to connect with Multiple Hardware components physically and also electrically. So they can connect with each other. The motherboard in your Computer performs the following function as under:

  • Connect the CPU: The CPU is installed in a socket on the motherboard. After that, it establishes the electrical Connections, communicates with all other Components, and allows the CPU to complete its job effectively.
  • Provides Memory Slots: The motherboard includes RAM module installation slots, allowing the PC to swiftly store and access data.
  • Provides Expansion Slots: Motherboards contain slots for expansion which enable you to add hardware components to the computer System such as graphics cards, sound cards, and Wi-Fi cards to improve the speed and capabilities of your PC.
  • Provides Connectors: The motherboard includes connectors and ports such as USB, Ethernet, and audio jacks that allow you to attach ports and other devices to the system.
  • Hosts the BIOS: The motherboard contains a small program called BIOS that is responsible for initializing and configuring the hardware components during the PC’s startup process.
  • Determines PC Form Factor: The motherboard’s physical size and layout determine the form factor of the PC. Different motherboard, such as ATX, Micro-ATX, and Mini-ITX, support different sizes.

Types of Motherboard

What does a motherboard do
  • ATX Motherboard: This is the most prevalent motherboard type found in desktop computers. It measures 12 by 9.6 inches and can accommodate a variety of components such as several graphics cards and numerous USB connections.
  • Micro-ATX Motherboard: This Motherboard is Smaller than ATX Motherboard. The Motherboard is 9.6 x 9.6 inches. Although it has fewer expansion slots, it can accommodate numerous graphics cards and other components.
  • Mini-ITX Motherboard: This is small motherboard in size. Mini-ITX Motherboard is 6.7 × 6.7 inches. It has limited expansion options and is intended for usage in small form factor (SFF) computers.
  • Extended-ATX (E-ATX) Motherboard: This motherboard is bigger than the ATX motherboard, with 14 x 12 inches. It’s intended for high-end gaming or workstation setups and can accommodate numerous graphics cards, fast storage drives, and other components.
  • Server Motherboard: This type of motherboard is designed for use in servers and other enterprise level applications. It has a larger form factor than desktop motherboards and supports features such as multiple CPUs, ECC memory and remote management. 
  • Workstation Motherboard: Workstation motherboards, like server motherboards, are intended for professional applications that demand high-performance processing. It supports multiple CPUs, ECC memory, and numerous graphics cards, among other things.
  • Gaming Motherboard: These motherboards are designed with gamers in mind, featuring high-speed connectivity choices, multiple graphics card compatibility, powerful audio and networking features, and more.


What 3 things does a motherboard do?

It distributes power and allows communication between the central processor unit (CPU), random access memory (RAM), and any other component of the computer’s hardware.

What is the most important thing about a motherboard?

The motherboard is the backbone that connects all of the computer’s components and allows them to communicate with one another.

What things are connected to the motherboard?

CPU, RAM, hard drives, optical drives, video card, sound card, and other ports and expansion cards are all accessible either directly or through cables.

Which is the best Motherboard in 2023?

Gigabyte Z790 Aorus Xtreme.
Gigabyte Z690 Aorus Pro.
ASRock Z690 Extreme WiFi 6E.
Gigabyte Z690I Aorus Ultra Plus.
Gigabyte Aorus Z690 Tachyon.
Asus ROG Strix B660-I Gaming WIFI.
Asus Prime H610M-A D4.


In Conclusion, the motherboard is an important component of a computer system, acting as the core hub that connects all other components. It connects numerous hardware components electrically and physically, allowing them to communicate and function together effortlessly.

The motherboard performs various key functions, including connecting the CPU, providing memory and expansion slots, providing connectors and ports, housing the BIOS, and establishing the form factor of the PC. In the Market, there are so many brands and different types of motherboards, But it is important to think about your specific needs, Price, and Compatibility.


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