device-name: The name of the device whose characteristics are to be modified. The device name has the form ddcu, where: dd is the device code-for example, LP. (The driver name corresponds to the device code; in this case, the driver name would be SYS$LPDRIVER.) c is the controller designation A through Z; unless UCM specifies a different letter, all USB devices are A. u is the unit number (0 through 9999). OpenVMS device names are made up of the two-character device code, followed by the controller designation, the unit number (which can be 1 to 4 characters long), and, finally, a colon (:).