Mini-ITX Addendum to the MicroATX Specification

16
3 Power Supply Information
Provided the very different needs of the platforms that fit in the small desktop form
category, this specification does not attempt to define a standard for the power supply
to match with the Mini-ITX motherboard specification. Instead it recommends that
manufacturers consider using a:
 SFX, TFX or FlexATX* are available power supply form factor for chassis greater
than 4 liters.
 External power adapter for chassis less than 4 liters and All-in-One desktop
PCs.**
* Refer to the microATX Motherboard Interface Specification for information on power
supply requirements.
** Refer to related system design guides for information on AIO power supply
requirements.