Mini-STX


Mini-STX is a computer motherboard form factor that was released by Intel in 2015.
These motherboards measure 147mm by 140mm, making them larger than "4x4" NUC and Nano-ITX boards, but notably smaller than the more common Mini-ITX boards. Unlike these standards, which use a square shape, the Mini-STX form factor is 7mm longer from front-to-rear, making it slightly rectangular.

Mini-STX design elements

The Mini-STX design suggests support for:
This motherboard form factor is still not in particularly common use with consumer-PC manufacturers, although there are a few offerings:
  • ASRock offers both and ,
  • Asus offer VivoMini kits and standalone motherboards,
  • Gigabyte offers a few , and
  • industrial PC suppliers also provide some options for mini-STX equipment.

    Derivatives

ASRock developed a derivative of mini-STX, dubbed , for their small form-factor PCs and industrial motherboards.
Micro-STX adds an MXM slot which allows the use of special PCI Express expansion cards, including graphics or machine learning accelerators, but increases the width of the board to be extended two inches, resulting in measurements of 147 x 188 mm