~$ sudo dmidecode | grep PCI
                PCI is supported
        Designation: PCI-1, J4D2
        Type: 32-bit PCI
        Designation: PCI-2, J4D1
        Type: 32-bit PCI
        Designation: PCI-3, J4C1
        Type: 32-bit PCI
        Designation: PCI-4, J4B1
        Type: 32-bit PCI
        Designation: PCI-5, J4A1
        Type: 32-bit PCI

===================

~$ sudo hwinfo | grep PCI
  f00f0  06 05 04 04 02 00 04 00 50 43 49 2d 32 2c 20 4a  "........PCI-2, J"
  f0110  04 00 50 43 49 2d 33 2c 20 4a 34 43 31 00 00 09  "..PCI-3, J4C1..."
  f0120  0d 24 00 01 06 05 04 04 04 00 04 00 50 43 49 2d  ".$..........PCI-"
  f0140  03 04 05 00 04 00 50 43 49 2d 35 2c 20 4a 34 41  "......PCI-5, J4A"
       str1: "PCI-1, J4D2"
       str1: "PCI-2, J4D1"
       str1: "PCI-3, J4C1"
       str1: "PCI-4, J4B1"
       str1: "PCI-5, J4A1"

[....]

PCI supported
    Designation: "PCI-1, J4D2"
    Type: 0x06 (PCI)
    Designation: "PCI-2, J4D1"
    Type: 0x06 (PCI)
    Designation: "PCI-3, J4C1"
    Type: 0x06 (PCI)
    Designation: "PCI-4, J4B1"
    Type: 0x06 (PCI)
    Designation: "PCI-5, J4A1"
    Type: 0x06 (PCI)