I have no idea. I would have to look at it. I know it uses a 946 Chipset, but it appears to be a Dell Board previously. The nice thing is that it was from one of their workstation systems (XPS?!?!) and There isn't much markings on it. I will get a look at it tomorrow. I am getting a harddrive setup for Linux (Ubuntu) to play with it. I would put OSx86 on it, but pretty much nothing in it is supported, I mean by Graphics card (this particular one is known not to work) and a few others like the sound card. So I doubt I will be putting OS X on it. Although, it would be nice...