What is the difference between Micro ATX and ATX?

Micro ATX is one of the offshoots of ATX, and its main difference from the main ATX form factor is size. ATX retains a generally rectangular board size measuring 305mm. by 244mm. … While ATX boards typically have five expansion slots, Micro ATX typically has three with four being the absolute maximum.

Micro ATX is one of the offshoots of ATX, and its main difference from the main ATX form factor is size. ATX retains a generally rectangular board size measuring 305mm. by 244mm. … While ATX boards typically have five expansion slots, Micro ATX typically has three with four being the absolute maximum.

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