HP
RC1-4439-000CN
is compatible in the following HP Models:
HP Color LaserJet CP4000 Printer series
HP COLOR LASERJET CP4005DN PRINTER - CB504A
HP COLOR LASERJET CP4005N PRINTER - CB503A
HP Color LaserJet 4000 Multifunction Printer series
HP COLOR LASERJET 4730X MULTIFUNCTION PRINTER - Q7518A
HP COLOR LASERJET 4730XM MULTIFUNCTION PRINTER - Q7520A
HP COLOR LASERJET 4730XS MULTIFUNCTION PRINTER - Q7519A