Expansion Board

An expansion board is a printed circuit board that you can insert into a computer to give it added capabilities. For example, all of the following are expansion boards:

  • video adapters
  • graphics accelerators
  • sound cards
  • accelerator boards
  • internal modems
  • Expansion boards for PCs can be half-size (also half-length) or full-size (also full-length). Most PCs have slots for each type of board. A half-size board is sometimes called an 8-bit board because it can transmit only 8 bits at a time. A full-size board is called a 16-bit board. In addition, some expansion boards are designed to operate with a local bus, such as PCI.

    Expansion boards are also called adapters, cards, add-ins, and add-ons.

    Webopedia Staff
    Webopedia Staff
    Since 1995, more than 100 tech experts and researchers have kept Webopedia’s definitions, articles, and study guides up to date. For more information on current editorial staff, please visit our About page.

    Top Articles

    List of Windows Operating System Versions & History [In Order]

    The Windows operating system (Windows OS) refers to a family of operating systems developed by Microsoft Corporation. We look at the history of Windows...

    How to Create a Website Shortcut on Your Desktop

    Website Shortcut on Your Desktop reviewed by Web Webster   This Webopedia guide will show you how to create a website shortcut on your desktop using...

    What are the Five Generations of Computers? (1st to 5th)

    Reviewed by Web Webster Each generation of computer has brought significant advances in speed and power to computing tasks. Learn about each of the...

    Hotmail [Outlook] Email Accounts

    Launched in 1996, Hotmail was one of the first public webmail services that could be accessed from any web browser. At its peak in...

    SHA-256

    SHA-256 is an algorithm used for hash functions and is a vital component...

    Document Management System

    A document management system is an automated software solution businesses and organizations use...

    Conti Ransomware

    Conti ransomware first emerged in 2020. It uses a ransomware as a service...