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.
PCI Express x16: 1 x PCI Express x16 slot, running at x4 (PCIEX4)
* The M.2 socket shares bandwidth with the PCIEX4 slot. When the M.2 socket is populated, the PCIEX4 slot will operate at up to x2 mode.