Designed from scratch by the manufacturer of your printer, there is no better choice for your Hewlett Packard laser printer than the genuine CF256A black toner cartridge. As an original Hewlett Packard black toner cartridge the HP 56A gives a quality of print unobtainable by any alternate products and is worth every penny.The running cost of all compatible Hewlett Packard mono laser printers is mercifully low with the CF256A thanks to the high 7,400 page yield of the black toner cartridge. You are guaranteed compatibility between the HP 56A and any laser printer mentioned on this page (including the Hewlett Packard LaserJet MFP M436nda), so you can rest assured with one of these units in hand.