Original hp is proven superior to compatible and manufactured cartridges. Designed to work first time, every time. Rely on original hp cartridges to perform consistently. Quality and outstanding print quality when you use original hp cartridges.Hp 12a laserjet toner cartridge, black. Average cartridge yields 2,000 standard pages.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.