There is no better way of ensuring the successful running of your Hewlett Packard printer than running it with a genuine toner cartridge like this CF325X. Original toner cartridges like the HP 25X guarantee compatibility and ever part of the completed unit has been designed to work flawlessly with the HP LaserJet Enterprise Flow M830z and all other compatible printers.In addition to the astonishing amount of car put into designing and assembling the Hewlett Packard CF325X cartridge, the toner powder within has also been tailored to task. As a result you can rest assured that the maximum amount of black toner powder from the HP 25X will be fused to paper, minimising waste and improving the final print quality.