Qseven

It is smaller than other computer-on-module standards such as COM Express, ETX or XTX and is limited to very low power consuming CPUs.

The name comes from the word "quadratic" due to the square shape of the original module, 70 mm on a side.

[1] Other companies based in Europe such as Kontron adopted the standard, but after a few years it had not yet been popular in the USA.

It also explains how to extend the supported buses and how to add additional peripherals and expansion slots to a Qseven-based system.

Qseven uses one 230 pin MXM2 SMT edge connector to connect all power and signal lanes to the carrier board.