em(4) driver not working with Intel Pro 1000 P (dual port pci express)

Hi, we just bought a bunch of Dell PowerEdge 1850 and Dell PowerEdge 2850. They have 2x1000 mbps nic onboard (intel pro 1000) which works fine with the em(4) kernel module. We also bought a pci express dual port Intel pro 1000 P nic (the chip on it is a 82546GB) We are unable to detect

em(4) driver not working with Intel Pro 1000 P (dual port pci express)

Hi, we just bought a bunch of Dell PowerEdge 1850 and Dell PowerEdge 2850. They have 2x1000 mbps nic onboard (intel pro 1000) which works fine with the em(4) kernel module. We also bought a pci express dual port Intel pro 1000 P nic (the chip on it is a 82546GB) We are unable to detect