HP Optical Unit
IR4041K121NR
is compatible in the following HP Models:
HP LaserJet 4000 Multifunction Printer series
HP LASERJET 4345 MULTIFUNCTION PRINTER - Q3942A
HP LASERJET 4345X MULTIFUNCTION PRINTER - Q3943A
HP LASERJET 4345XM MULTIFUNCTION PRINTER - Q3945A
HP LASERJET 4345XS MULTIFUNCTION PRINTER - Q3944A
HP Color LaserJet 4000 Multifunction Printer series
HP COLOR LASERJET 4730 MULTIFUNCTION PRINTER - Q7517A
HP COLOR LASERJET 4730X MULTIFUNCTION PRINTER - Q7518A
HP COLOR LASERJET 4730XM MULTIFUNCTION PRINTER - Q7520A
HP COLOR LASERJET 4730XS MULTIFUNCTION PRINTER - Q7519A