HP 12A LaserJet Toner Cartridge, black. Average cartridge yields 2,000 standard pages.[2] Hardware compatibility: HP LaserJet 1010 and 1020 Printer series, HP LaserJet 3015, 3020, 3030, 3050, 3050z, 3052, and 3055 All-in-One Printer series, and HP LaserJet M1005 mfp