8 – x16/x16 PCIe cards (x16 electrical and x16 mechanical interface)
5 – x4/x16 PCIe cards (x4 electrical and x16 mechanical interface)
The eight x16/x16 card slots are validated for use with Matrox Mura MPX series video controller cards.
The additional five (5) PCI Express x16 mechanical card slots are available for use with other video cards such as the Matrox MPXv16 or 1P690 cards. These additional card slots are driven with x4 PCIe electrical interfaces and may be useful in select video controller applications.