7 Plutonium

RE: POST failed when plug in PCI-E 8X network adapter

PCI-e 2.0 cards are not compatible.  PCI-E 2.1 and 3.0 are required.  The 7050 does not have any slots designed to work as you are trying.  X16 slots are for non SLI non Crossfire Video not for PCI-E 2.0 nics.

The 7810 works because there are 

PCIe x16 slot (PCIe 2.0 wired as x4) (slot 5)



The 7050 is not a server and not designed to be a server or high end workstation.

PCI-E 3.0 is not backwards compatible with 2.0 or 1.0 due to power as well as bus speed and Line Code it is with 2.1.

8b/10b is a line code that maps 8-bit words to 10-bit symbols to achieve DC-balance and bounded disparity, and yet provide enough state changes to allow reasonable clock speed recovery. 

128b/130b encoding in PCI-Express Gen3 and up is not backwards compatible at the BIOS level. 

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