The 'Real tek pcie gee family controller' is the onboard NIC (I have the same one).
Really?
I only ask as there doesn't appear to be such a thing. There is a "GBE" controller and that combined with the "PCIE" appears to point to a NIC card rather than an onboard NIC.
I'm in no way disputing what you've said and I'm always willing to learn.
EDIT - An afterthought. Is this a laptop by any chance?