PCI Express x16: 1 x PCI Express x16 slot, running at x4 (PCIEX4)* The PCIEX4 slot shares bandwidth with the PCI Express x1 slots. The PCI Express x1 slots will become unavailable when a PCIe x4 expansion card is installed.* When installing a x8 or above card in the PCIEX4 slot, make sure to set PCIE Slot Configuration (PCH) in BIOS Setup to x4.
PCI Express x16: 1 x PCI Express x16 slot, running at x4 (PCIEX4)* The PCIEX4 slot shares bandwidth with the PCI Express x1 slots. The PCI Express x1 slots will become unavailable when a PCIe x4 expansion card is installed.* When installing a x8 or above card in the PCIEX4 slot, make sure to set PCIE Slot Configuration (PCH) in BIOS Setup to x4.
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. / 1 x PCI Express x16 slot, running at x8 (PCIEX8) / * The PCIEX8 slot shares bandwidth with the PCIEX16 slot. When the PCIEX8 slot is populated, the PCIEX16 slot will operate at up to x8 mode. / (The PCIEX16 and PCIEX8 slots conform to PCI Express 3.0 standard.)
PCI Express x16: 1 x PCI Express x16 slot, running at x4 (PCIEX4) * The PCIEX4 slot shares bandwidth with all PCI Express x1 slots. All PCI Express x1 slots will become unavailable when a PCIe x4 expansion card is installed. * When installing a x8 or above card in the PCIEX4 slot, make sure to set PCIE Slot Configuration in BIOS Setup to x4.