Hewlett Packard Laserjet 2300 Toner Cartridge Black Code Q2610A. Specially formulated toner particles to enable faster print speeds; accurate toner level sensing technology to improve workflow and reduce user/maintainer interactions; precise matching and integration of toner cartridge and printer for optimal image quality every time; industry leading R&D design manufacturing and testing backed by HP's limited lifetime warranty; HP smart printing supplies features for easier supplies management