3.3.1 Cases and Form Factors

The most common motherboard form factor, with standard dimensions of 9.6 inches by 12 inches.

A smaller variant of the ATX form factor, typically 9.6 inches by 9.6 inches, with fewer expansion slots.

An expanded version of ATX, larger than standard ATX, to accommodate more memory slots.

A small form factor designed for compact computers.

A specification defining the dimensions and layout of a motherboard, enabling compatibility with specific computer cases.

The physical width and height of a motherboard, crucial for case compatibility.

Ensuring that the motherboard's form factor matches the computer case.

Slots on the motherboard used for adding components like graphics cards to an ATX motherboard, typically spaced 0.8 inches apart.

A smaller motherboard form factor measuring 6.7 inches by 6.7 inches, designed for low power and small computers, compatible with ATX cases.

A standard motherboard form factor, compatible with full-tower, mid-tower, and microATX cases. It's a common standard in modern PCs.

A form factor intended to replace ATX; different back panel orientation, similar dimensions.

A motherboard form factor with a unique back panel and use of riser cards for parallel expansion cards.

Large case compatible with ATX and EATX motherboards; has multiple external bays and ample internal space for components.

A medium-sized computer case to fit ATX motherboards and, sometimes, Mini-ITX. Fewer and smaller bays than full-towers.

A small case designed for MicroATX motherboards; often with fewer bays than Mid-Towers.

The smallest case, designed for Mini-ITX motherboards only.

Defines the size and specifications of a motherboard and determines which case type is compatible.

A card used for installing expansion cards in a specific way that attaches to particular motherboards.