When referring to computer hardware, a form factor is a specification for its layout and physical dimensions. Form factors help prevent incompatibilities between multiple hardware manufacturers.

Motherboard form factors

As computers advanced, so have motherboards. Below is a listing of the various motherboard form factors and links to additional information about each of them. Today, the most common motherboard form factor for desktop computers is the ATX form factor.

  • AT
  • ATX
  • Baby AT
  • BTX
  • DTX
  • ITX
  • LPX
  • Full AT
  • Full ATX
  • Micro-ITX
  • microATX
  • Mobile-ITX
  • NLX
  • Pico-ITX

Form, Hardware, Hardware terms, Motherboard, Motherboard terms, Standard