We have couple of SBI-7427R-SH blade servers that have on PCI slot. The blade server fails to detect any PCI device that we insert in the PCI slot. The same PCI device is recognized properly on other machines (intel PCs) in our lab. We are using 10G NIC (Niantic) from Intel as a PCI device.
PCI-E slot is connected to CPU2, you need 2 CPU in order for it to work