The USB (Universal Serial Bus) Configuration Manager (UCM)
    utility allows you to connect a computer to a variety of devices
    using a single four-wire cable. More specifically, UCM does the
    following:

    o  Records events such as plugging or unplugging devices and
       errors that occur on a USB bus. This is the USB event-logging
       function of UCM.

    o  Maps physical devices to persistent device names (based on
       either serial number or bus location).

    o  Automatically configures and loads OpenVMS device drivers for
       known device types.

    o  Manages additions, deletions, and modifications to devices
       configured on the system.

    Types of UCM Configuration

    Beginning in OpenVMS Version 8.3, UCM automatically configures
    any new (non-permanent) device, loads the OpenVMS device driver
    for it, and makes the device permanent. This means that adding a
    new device to the system is as simple as plugging it in. This is
    automatic configuration.

    However, you might decide to disable automatic recognition
    and configuration of new devices, or restrict the automatic
    configuration only to specific devices. You do this by first
    using a UCM SET AUTO command. You can then follow a number of
    procedures required for manual configuration.

    Online help inside the UCM utility provides basic instructions for
    using UCM to configure devices automatically and manually. It also
    explains how to view events related to device configuration.

    The UCM chapter in the VSI OpenVMS System Management Utilities
    Reference Manual contains explanations of USB and UCM concepts.
    It also contains details about how UCM works. The final section
    in the chapter details UCM commands and contains examples of
    these commands.

    To invoke UCM, enter UCM at the DCL command prompt ($):

    $ UCM

    UCM>

    At the UCM> prompt, you can enter any UCM command, including HELP.

    Alternatively, you can enter UCM commands at the DCL prompt if
    you precede them with UCM. For example:

    $ UCM RELOAD
    $

    To exit from UCM, enter the EXIT command at the UCM> prompt, or
    press Ctrl/Z.