X10SRA/C7Z97-OCE BIOS expert shows the items hidden by default.
You may use I/O shield part number MCP-260-00063-0N.
We have tested I7-4790 on X10SAE and the result is pass, please use R3.0 BIOS or later to confirm I7-4790 bootable or not.
The 3 PCI-E 3.0 x16 can be used as 16/NA/NA or 8/8/NA or 8/4/4.
The Cent OS 6.5 cannot support C7Z97-OCE well due to old ACPI code. Please install Cent 7 for the usage.
This is Intel limitation. This warning message will not be removed before Version 5 of XTU is released. The XTU revision 5 is scheduled to be released in September, 2014. New driver CD will be released then.