The Fitlet2 is one of the smallest full-featured mini PC on the market. It can be powered by Intel Apollo Lake Atom and Celeron CPUs coupled with up to 16 GB of DDR3L-1866 RAM, and supports M.2 / eMCC / 2.5-inch HDD storage solutions. It also comes with a fanless enclosure and it is marketed as an IoT gateway.
https://www.notebookcheck.net/Compulab-outs-Fitlet2-mini-PC-with-Apollo-Lake-CPUs-starting-at-US-153.262600.0.html