Designed for compatibility with models including C220, C280, C360, 7722, 7728, C224, and C284 to ensure integration and functionality.Includes 4 DV311 and DV512 developer reset chips, providing an efficient solution for maintaining your printer's performance.Engineered to reset the developer units, helping to extend the of your printing and reduce downtime.Easy installation process allows users to quickly replace the chips and get back to printing without hassle.Enhances print quality by