What Zac demonstrated in video was a very elegant method of adding two PCI-X expansion slots to a PowerEdge OEM-Ready R710 server simply by replacing the standard PCIe risers with custom PCI-X risers. While the vast majority of the IT world has moved beyond PCI-X I/O expansion several years ago, there was still enough demand for the technology to justify engineering, manufacturing, and supporting PCI-X on a current generation server. Any OEM customer can contact their Dell OEM sales team and request these. http://marketing.dell.com/oem