Well, here is a picture of the motherboard:
http://www.a-eon.com/4.htmlI will leave it up to you others with better knowledge than me to figure things out, but it seems to me that X = PCI Express.
One good thing is that they seem to have left out all legacy ports and have 8 USB ports instead. I do also wonder about what the card-slot in the corner is for, but maybe the basic system settings and files will be stored on a flash card or something?
