EMX boards are off-the-shelf products requiring no customer hardware development. They offer easy expansion with stackable I/O modules. EMX boards are available in two sizes: EMX Basic (125mm x 95mm) and EMX Compact (95mm x 95mm). Each size is compatible with all EMX expansion modules.

An EMX processor module can be either a two-board combination of carrier plus COM module or a traditional single-board computer.  Those that are based on the former provides an easy way to utilize the wide selection of COM Express COM modules available from multiple vendors worldwide, resulting in performance scalability, protection from CPU obsolescence, and earlier access to the latest processor technology.  The latter offers immediate usage of board without worrying about incompatibilities that may exists between COM modules and carrier.

A major improvements offered by EMX is the new expansion connector used for add-on I/O modules. The EMX expansion connector is smaller and lower cost than other standards, helping to reduce cost while increasing the PCB area available for processor and I/O circuitry. Thus EMX enables boards with higher feature density than other small form factor standards. The EMX expansion connector contains ample reserved pins, ensuring a long lifetime by providing the capacity to incorporate new features as they become available and desirable.