This is a premium compatible Black Laser Toner Cartridge for HP LaserJet M4345xm MFP, M4345 MFP, 4345mfp, 4345, M4345xs MFP, M4345x MFP, 4345xm MFP, 4345xs MFP, 4345x mfp printers. It is designed to replace HP Q5945A toner cartridges. The MTI © compatible 45A toner cartridge produces crisp detail, sharp text and clear graphics. Our printing products give you consistent, professional results at 40-60% of OEM prices. MTI © toner cartridges are engineered to exceed industry standards of high yield and exceptional quality, and guaranteed to perform with HP LaserJet Printers. Every cartridge is factory tested and ISO approved. We offer an exclusive 30-day customer satisfaction guarantee and 1-year warranty. Our dedicated customer care staff is available 9 a.m. to 7 p.m, Monday through Saturday, to answer any questions and provide technical support.