The HP LaserJet Q5945A (HP 45A) Print Cartridge is a smart choice. The professional quality and legendary reliability of HP LaserJet printing delivers quality and value. Reliable performance means less user intervention and more productivity. Interactive HP Smart Printing technology in HP supplies and the printer makes automatic adjustments to optimize print quality and enhance reliability. HP's microfine toner provides highly accurate placement and control for consistently sharp text and smooth grayscales. (Using genuine HP supplies ensures availability of all HP printing features). HP Smart Printing technology and the all-in-one cartridge design make HP supplies easy to use and maintain, saving you time and lowering overall printing costs. Take advantage of remote supplies management for flexibility and control. Receive automatic alerts when a cartridge is low or out.