2PCS MP2554 Developer Powder Compatible For D1979641 Regenerative Developer Black MP2554 MP3054 MP3554 MP4054 MP5054 M6054 This developer powder is designed for use with the D1979641 regenerative developer unit and is compatible with the following models: MP2554, MP3054, MP3554, MP4054, MP5054, and M6054. It supports black toner development in laser printing systems. Each pack contains two pieces of developer powder, intended to restore developer performance in compatible machines. The powder aids in maintaining consistent print density and image clarity during the printing process. Compatibility Disclaimer: This is an aftermarket replacement part. Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.