MicroATX
Standard for motherboards
In computer design, microATX is a standard motherboard form factor introduced in December 1997. The maximum size of a microATX motherboard is 9.6 × 9.6 in (244 × 244 mm). However, there are examples of motherboards using microATX designation despite having a smaller size of 244 × 205 mm (9.6 × 8.1 in). The standard ATX size is 25% longer, at 12 × 9.6 in (305 × 244 mm).
Also known as...
μATX, uATX, mATX, micro ATX, and micro-ATX
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