This ADF hinge is designed as a replacement part for restoring the automatic document feeder function on compatible printer models.It fits M3040, M3145, M3540, M3550, M3560, M3645, M3655, M3660, M6030, M6035, M6230, M6235, M6530, M6535, and M6630 series machines.The component corresponds to part number 302NM18021 and serves to replace worn or damaged hinges to ensure standard of the document feeding mechanism.Installation follows the equipment specifications for these listed models.