- - DV512K/A2XN03D black, DV512C/A2XN0KD cyan, DV512M/A2XN0ED magenta, DV512Y/A2XN08D yellow replacement developer unit. Product Details:- - Model: DV512 Developer Unit- - Printing color: black//yellow/cyan/red- - Appearance: Environmentally friendly recycled rubber parts- - Number of printed pages: approximately 590,000 pages in black/approximately 590,000 pages in color- - Applicable models: For Konica Minolta C224 C224E C284 C284E C364 C454 C554 C7822 C7828 and other series. Warm Tips:- - 1. Since models vary in different regions, please confirm your original developing unit model and printer model and let us know.- - 2. Make sure not to touch the chip sensor on the Developer Unit for optimal performance.- - 3. The packaging box in the picture is only for identifying the developer unit, It is different from actually receiving the packaging.- - 4. If you encounter any problems when purchasing or using developer unit, please feel free to contact us.