What is the pin out of the connector on the arduino ethernet board?

I'm trying to figure out how ethernet works on the arduino ethernet shield, and I'm having trouble figuring out the connections on the board. The connector doesn't have a standard pin out since it's POE, and a google search for the datasheet only brings up Chinese retailers, but no datasheets. Can anyone help me out? I've checked the schematic, but I have a few questions lingering that would be cleared up if I can figure out how the w5100 hooks up to the rj 45 connector. Thanks!

What do you need to know that you can't learn for the schematic and board layout?

I think the connector part is RS3-16401D1A from UDE-Corp.