Abstract: The present system provides structure to automatically load vertically positioned printed wire boards (hereinafter PWBs), into a processing "line." The present system employs a movable loader device. The movable loader device has multiple levels of PWB rack-cassettes. The rack-cassettes are loaded, into the movable loader device, with PWBs, prior to the movable loader device being engaged with the remainder of the system. Thereafter the movable loader device is rolled on wheels, to be in contact with a locking device, whereat it is secured, so that the PWBs can be precisely aligned with the index-loader-cassette of the processing "line." The PWBs are automatically moved from the index-loader-cassette into and through the transport path.