This HP Q6511X Compatible Black Toner Cartridge is a high quality laserjet toner that prints 12000 pages at 5% average coverage. Combining crisp black and white prints with all types of documents the Q6511X is a viable toner which saves money on buying the original Q11X and helping the enviroment as well. The 11X Q6511X is a high capacity toner cartridge, saving time replacing the toner and money. LaserJet 2410,LaserJet 2420,LaserJet 2420d,LaserJet 2420dn, LaserJet 2420n,LaserJet 2430,LaserJet 2430dtn, LaserJet 2430n,LaserJet 2430t,LaserJet 2430tn