Mini ATX

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Mini ATX or Mini-ATX is a generic name that may be used by motherboard manufacturers to describe a small motherboard, and has been used by AOPEN in reference to a motherboard design with dimensions 15 × 15 cm (5.9 × 5.9 in).

Mini-ATX motherboards were designed with MoDT (Mobile on Desktop Technology), which adapts mobile CPUs for lower power requirements and less heat generation, which may be beneficial for home theatre PCs (HTPC), in-car PCs, or industrial use,^[1] before being abandoned in v2.1 in favor of the MicroATX specification.

Mini-ATX motherboards are no longer used, due to MicroATX surpassing its features, and manufacturers no longer produce motherboards in this form factor.