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<itemizedlist>
  <listitem>
    <para><literal>audio</literal></para>
    <para>A device capable of producing an analog or digital
    sound signal is an <firstterm>audio</firstterm> device.
    Typically, any device commonly referred to as a
    <quote>sound card</quote> is classified by &discover; as
    an audio device.</para>
  </listitem>
  <listitem>
    <para><literal>bridge</literal></para>
    <para>A device that provides access to devices of a
    different type, commonly on a different bus, is a
    <firstterm>bridge</firstterm> device.  For instance, consumer
    &pci; chipsets often feature a bridge to &ata; (also
    known as IDE) devices.</para>
  </listitem>
  <listitem>
    <para><literal>broadband</literal></para>
    <para>An interface device to a computer communications
    network implemented on top of a technology not explicitly
    designed for that purpose is a <firstterm>broadband</firstterm>
    device.  Examples include ISDN terminal adapters as well
    as DSL and cable <quote>modems</quote>; analog
    phone-line modems are not included in this classification
    (see <quote>modem</quote> below).</para>
  </listitem>
  <listitem>
    <para><literal>display</literal></para>
    <para>A device controlled by the host machine's CPU and
    capable of producing an analog or digital video signal
    for output purposes is a <firstterm>display</firstterm> device.
    Typically, any device commonly referred to as a
    <quote>video card</quote> is classified by &discover; as
    a display device.</para>
  </listitem>
  <listitem>
    <para><literal>fixeddisk</literal></para>
    <para>A high-speed, fixed magnetic storage device such as
    a hard disk drive is a <firstterm>fixeddisk</firstterm> device.
    Removable media devices such as floppy disk drives,
    CD-ROM drives, magneto-optical devices, tape drives, and
    Compact Flash card readers are not included in this
    classification.</para>
  </listitem>
  <listitem>
    <para><literal>humaninput</literal></para>
    <para>A device that receives tactile input from a person
    for the purpose of directing a computer's activity is a
    <firstterm>humaninput</firstterm> device.  Examples include
    keyboards, mice, trackballs, joysticks, gamepads, digital
    tablets manipulated with a stylus or finger, and so
    forth.  Input devices that rely upon non-tactile means of
    determining a person's intent, such as speech-recognition
    devices or cameras, are not included in this
    classification.</para>
  </listitem>
  <listitem>
    <para><literal>imaging</literal></para>
    <para>A device that captures still images for input
    purposes is an <firstterm>imaging</firstterm> device.  Scanners
    and digital cameras are examples of imaging
    devices.  Motion-capture devices such as television tuner
    cards, webcams, and digital video cameras are not
    included in this classification.</para>
  </listitem>
  <listitem>
    <para><literal>miscellaneous</literal></para>
    <para>Any device that cannot logically be classified as
    another device type is a <firstterm>miscellaneous</firstterm>
    device.</para>
  </listitem>
  <listitem>
    <para><literal>modem</literal></para>
    <para>An analog phone-line modulator/demodulator
    (modem) is classified by &discover; as a
    <firstterm>modem</firstterm> device.  No other kind of device is
    so classified.</para>
  </listitem>
  <listitem>
    <para><literal>network</literal></para>
    <para>An interface device to a conventional computer
    data communications network that does not require the use of a terminal
    adapter is a <firstterm>network</firstterm> device.  For example,
    Ethernet and Token Ring network interface cards are network
    devices.  Analog phone-line modems; terminal adapters
    for technologies such as ISDN and DSL; and <quote>cable modems</quote>
    are not <quote>network</quote> devices.</para>
  </listitem>
  <listitem>
    <para><literal>optical</literal></para>
    <para>An optical-technology storage device, often using
    read-only media, is an <firstterm>optical</firstterm> device.  By
    far the most common examples of these devices are CD-ROM
    and DVD-ROM drives, including versions of these drives
    that can <quote>burn</quote> (write to) optical
    discs.</para>
  </listitem>
  <listitem>
    <para><literal>printer</literal></para>
    <para>A device that renders visual output in a permanent
    or semi-permanent manner to a physical medium is a
    <firstterm>printer</firstterm>.  Typically, any device
    colloquially referred to as a <quote>printer</quote> is
    also classified by &discover; as a
    printer.</para>
  </listitem>
  <listitem>
    <para><literal>removabledisk</literal></para>
    <para>Storage devices that feature removable media using
    just about any technology except that of magnetic tape,
    CD-ROM, and DVD-ROM drives are
    <firstterm>removabledisk</firstterm> devices.  Examples include
    floppy disk drives, magneto-optical drives, and Compact
    Flash card readers.</para>
  </listitem>
  <listitem>
    <para><literal>tape</literal></para>
    <para>A sequential-access mass storage device using
    magnetic tape is a <firstterm>tape</firstterm> device.  Commonly
    used for archival and backup purposes, DAT drives are
    examples of tape devices.</para>
  </listitem>
  <listitem>
    <para><literal>video</literal></para>
    <para>A device that produces a real-time digital video
    signal for input purposes is a <firstterm>video</firstterm>
    device.  Webcams, digital video cameras, and television
    tuners are examples of video
    devices.  Note that still digital cameras with
    <quote>movie</quote> capability are
    <emphasis>not</emphasis> considered video
    devices unless they can transmit the live video signal to
    the host in real time.</para>
  </listitem>
</itemizedlist>
