[bartvk]

There is standard stuff for this. When you search the internet, be sure to include "embedded" in your search terms.

Personally, I've worked with PC/104 sized systems. These are stackable. We needed a Linux box running on Intel for a project, with up to 16 serial ports. This is all possible with PC/104 based systems.

[seds]

Thanks. I tried this, must most embedded boards I find are usually weak in specs. I am looking for something capable of running 16-32GB of RAM, a powerful processor >= 2.8-3.2GHZ which I believe this is not the idea of a embedded board. Or am I wrong? Also, I would like something that I can easily, say, swap RAM when needed, and etc.