This HP Laser Jet 4240 4250 4350 Black Toner Cartridge Q5942A is the perfect choice for those who want to achieve high-quality prints. It is compatible with HP printers and is made with laser print technology, ensuring that your prints will be sharp and clear. The cartridge is designed to work specifically with HP printers, making it a reliable and efficient choice for all your printing needs. The black color of the toner cartridge ensures that your prints will be rich and bold, making them stand out. The model number HP 42A ensures that you are getting a genuine and original product.