[root@xnat1 ~]# dmidecode | grep -1 PCI

        Characteristics:

                PCI is supported

                PNP is supported

--

System Slot Information

        Designation: PCI-E Slot 1

        Type: x16 PCI Express 2 x16

        Current Usage: Available

--

System Slot Information

        Designation: PCI-E Slot 2

        Type: x16 PCI Express 2 x16

        Current Usage: In Use