HP Color LaserJet Toner Collection Unit (B5L37A) for HP Color LaserJet M554dn Printer (7ZU81A), M555dn (7ZU78A)M555x (7ZU79A), Flow MFP M578c (7ZU87A), Flow MFP M578z (7ZU88A), MFP M578dn (7ZU85A), MFP M578f (7ZU86A), HP Color LaserJet Managed E55040dn (3GX99A). M553dh (B5L27A), Flow MFP M577c (B5L54A), Flow MFP M577z (B5L48A), MFP M577dn (B5L46A), MFP M577f (B5L47A), M553dn (B5L25A), M553n (B5L24A), M553x (B5L26A), up to 50,000 pages (B5L37A), ~54,000 pages (B5L37A)