pci.ids(5)                (31 May 2020)                pci.ids(5)

     NAME
          pci.ids - list of known identifiers related to PCI devices

     INTRODUCTION
          Devices on the PCI bus are identified by a combination of a
          vendor ID (assigned by the PCI SIG) and device ID (assigned
          by the vendor). Both IDs are 16-bit integers and the device
          itself provides no translation to a human-readable string.

          In addition to the vendor and device, devices also report
          several other identifiers:

          +o  Device class and subclass (two 8-bit numbers)

          +o  Programming interface (8-bit number, meaning specific for
             the subclass)

          +o  Subsystem, which identifies the assembly in which the
             device is contained.  A typical example is an Ethernet
             add-in card: the device is the Ethernet controller chip,
             while the card plays the role of the subsystem.
             Subsystems have their vendor ID (from the same namespace
             as device vendors) and subsystem ID. Generally, the
             meaning of the subsystem ID depends on the device, but
             there are cases in which a single subsystem ID is used
             for many devices - e.g., laptop motherboards.

             The PCI utilities use the pci.ids file to translate all
             these numeric IDs to strings.

     KEEPING THE LIST UP-TO-DATE
          The pci.ids file is generated from the PCI ID database,
          which is maintained at If you find any IDs missing from the
          list, please contribute them to the database.

          You can use the update-pciids command to download the cur-
          rent version of the list.

          Alternatively, you can use lspci -q to query the database
          online.

     FILE FORMAT
          The pci.ids file is a text file in plain ASCII, interpreted

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     pci.ids(5)                (31 May 2020)                pci.ids(5)

          line by line.  Lines starting with the hash sign are treated
          as comments are ignored.  Comments regarding a specific
          entry are written immediately before the entry.

          Vendor entries start with a 4-digit hexadecimal vendor ID,
          followed by one or more spaces, and the name of the vendor
          extending to the end of the line.

          Device entries are placed below the vendor entry. Each
          device entry consists of a single TAB character, a 4-digit
          hexadecimal device ID, followed by one or more spaces, and
          the name of the device extending to the end of the line.

          Subsystem entries are placed below the device entry. They
          start with two TAB characters, a 4-digit hexadecimal vendor
          ID (which must be defined elsewhere in the list), a single
          space, a 4-digit hexadecimal subsystem ID, one or more
          spaces, and the name of the subsystem extending to the end
          of the line.

          Class entries consist of "C", one space, 2-digit hexadecimal
          class ID, one or more spaces, and the name of the class.
          Subclasses are placed below the corresponding class,
          indented by a single TAB, followed by a 2-digit hexadecimal
          subclass ID, one or more spaces, and the name of the sub-
          class.  Programming interfaces are below the subclass,
          indented by two TABs, followed by a 2-digit hexadecimal
          prog-if ID, one or more spaces, and the name.

          There can be device-independent subsystem IDs, although the
          web interface of the database does not support them yet.
          They start with a subsystem vendor line consisting of "S",
          one space, and a 4-digit hexadecimal vendor ID (which must
          correspond to an already listed vendor). Subsystems follow
          on subsequent lines, each indented by one TAB, followed by a
          4-digit hexadecimal subsystem ID, one or more spaces, and
          the name of the subsystem.

          To ensure extensibility of the format, lines starting with
          an unrecognized letter followed by a single space are
          ignored and so are all following TAB-indented lines.

     SEE ALSO
          lspci(8), update-pciids(8), pcilib(7)

     AUTHOR
          The PCI Utilities are maintained by Martin Mares
          <mj@ucw.cz>.

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