HP Cover
RM1-6669-000CN
is compatible in the following HP Models:
HP LaserJet M4555 Multifunction Printer series
HP LASERJET ENTERPRISE M4555FSKM MFP - CE504A
HP LASERJET ENTERPRISE M4555FSKM REFURBISHED MFP - CE504AR
HP Color LaserJet CM4540 Multifunction Printer series
HP COLOR LASERJET ENTERPRISE CM4540FSKM MFP - CC421A
HP COLOR LASERJET ENTERPRISE CM4540FSKM REFURBISHED MFP - CC421AR