Copyboard Cover Hinge compatible with MF 4010, MF 4012, MF 4018, MF 4120, MF 4122, MF 4140, MF 4150, MF 4300, MF 4310, MF 4318, MF 4320, MF 4322, MF 4330, MF 4340, MF 4350, MF 4352, MF 4370, MF 4380.This hinge is designed to replace the copyboard cover hinge and restore proper function of the cover mechanism.It is compatible with the listed models and installs using the mounting configuration.