PCI Express 3.0 x16: 1 x PCI Express x16 slot, running at x16 (PCIEX16)*
* For optimum performance, if only one PCI Express graphics card is to be installed, be sure to install it in the PCIEX16 slot.
* The PCIEX16 slot conforms to PCI Express 3.0 standard.
* Actual support may vary by CPU.
PCI Express 2.0 x16: 1 x PCI Express x16 slot, running at x4 (PCIEX4)