bios pcie slot configuration: Dell PowerEdge R730, 2x 3.2GHz 8-Core CPU, 256GB DDR4 .... ATX v3.1 & PCIe CEM 5.1 are official! - Hardware Busters. Dell PowerEdge R620 (Xeon E5-2643v2 6 Core, 32GB RAM). How to Check PCI Express Slot Version? - PC Guide 101.
Changed language in section 3.1 to list how PCIe CEM Rev 5.1 now incorporates all previous ECNs. ... PCIe CEM
Slot (Blue) and “Before Software Configuration” message (Green) lines are new.
Image: Different form factors follow a different PCIe slot configuration.