Smaller DTX motherboard form factor.

Motherboard form factor developed for compact systems.

Alternative motherboard form factor designed for thermal management.

Compact ATX-derived motherboard form factor.

Extended desktop motherboard form factor.

Extended ATX motherboard form factor.

Compact motherboard form factor.

Smaller ATX-compatible motherboard standard.

Common full-size desktop motherboard standard.

Standard defining motherboard size and mounting layout.