Small form factor solutions, such as COM Express, are becoming more popular in applications that used to be approached with modular 19″ technology. The increase in performance level and integration of many functions into off the shelf single board solutions give designers a host of possibilities to approach a new design.  Many designers must choose between a modular building block approach versus a custom mainboard development that may be expensive and time consuming to bring to market. In situations where the application demands low to medium volume deployment, a modular, single board computer based approach has strong advantages.