I just bought an Advantech SOM-4450 CSB-4004 board from eBay and would like to experiment with it. The problem is that it did not come with a manual, even though it was factory sealed from Advantech. I would like to know which type of 5V adaptor would fit this (i.e which polarity). The advantech site only gives a basic manual about the 4450 board, but mine is mounted on a larger board that has VGA/IDE, etc connectors on it. Does anybody know where I might find the manual?