You have to understand there is no longer a difference in ESXi now you use the same installation media for both. The only difference is the size of media you are installing it on. If you are installing it on a SD card or something like that and it is smaller then 5GB then that is what makes the difference. I have attached a link to an article, it is a little old, but still good at explaining the difference. So in short you use the same media so as long as your equipment is compatible with ESXi 5.5 then you are fine.
VMware Front Experience: ESXi embedded vs. ESXi installable FAQ