The micro-ATX form factor is an even smaller version of the ATX standard, with a maximum size of 9.6″ x 9.6″ (24cm x 24cm). The faceplate line up to the exact same position as in all other versions of ATX. System case that can hold an ATX motherboard can also hold micro ATX motherboard. The smaller mid or mini tower cases would likely be too small for a full ATX motherboard but should accommodate micro ATX motherboard. The terms mini-ATX and micro-ATX are often used interchangeably.