TROY 02-81350-001 MICR Toner Secure Cartridge for 601 602 603 Series (Compatible with HP LaserJet M601 M602 M603 Printers, HP Toner CE390A) Genuine OEM TROY MICR Toner Secure Cartridge Coordinating Non-MICR HP Part: CE390A Cartridge yields approx. 10K pages Works with TROY 601/602/603; HP LaserJet M601/M602/M603 series printers TROY Group develops, manufactures and distributes the highest quality MICR Toner products in the industry