Compatible HP models:Color LaserJet: CM3530, CM3530fs, CP3525dn, CP3525n, CP3525xLaserJet: M551dn, M551n, M551xh, M575c Collects waste toner during printing. Yields up to 36,000 pages. HP Ink, Toner & Ribbons part of a large selection of printer ink and toner. HP CE254A, Toner Collection Unit is one of many Ink, Toner & Ribbons available through Office Depot. Made by HP.