The Toner Refill Chip for Konica Minolta magicolor 5440DL / 5450 allows you to refill your cartridge while maintaining the your printer's diagnostics to estimate the amount of toner remaining in the cartridge. The Toner Refill Chip for Konica Minolta magicolor 5440DL / 5450 tells your printer that the cartridge is new or filled. All of our chips are easy to replace. Instructions are included in your SoHoJet Toner Refill Kit.