MICR High Yield Toner Cartridge for HP LaserJet 4000, 4000T, 4000N, 4000TN, 4000se, 4050, 4050T, 4050N, 4050TN and Troy 617 printers C4127X. Cartridge offers a new toner formulation and is engineered to ensure optimal printing of text and graphics. Designed to handle fast-paced business printing demands and deliver great results. Has been tested thoroughly so you know that it is reliable and dependable. Device Types: Laser Printer OEM/Compatible: Compatible Page-Yield: 10000 Supply Type: Magnetic Toner.