device-name[:]

    Supplies the name of the device whose characteristics are to
    be displayed. The device name has the form ddcu where dd is the
    device code, c is the controller designation, and u is the unit
    number. LAN devices are specified as the name of the device that
    is unit 0. For example, the first terminal device on a LAN is
    specified as TTA0, the second as TTB0.