Review on 4-Pack TRUE IMAGE Compatible Toner Cartridges for Brother TN227 TN-227 TN227BK TN223 TN-223BK Printer: MFC-L3750CDW, HL-L3210CW, HL-L3290CDW, HL-L3270CDW, HL-L3230CDW, MFC-L3710CW, MFC-L3770CDW by Jesse Hughes

This product was easy to install. I just took out the old cartridges and put these in. These are clearly labels so you can tell what color they are. Chips are already installed in them, and the printer recognizes them immediately. Print quality is as good as the original toner cartridges that came with the printer. I bought them again in January of this year. I haven't run out of toner yet.