Hello Pcorpat No, this drum unit (1pc) fits the following models: HL-L8260CDW , HL-L8360CDW, HL-L9310CDW(T) (TT), DCP-L8410CDW, MFC-L8690CDW, MFC-L8900CDW, MFC-L9570CDW(T), MFC-L9577CDW. For a DCP-9020CDW the drum set (4 pcs.) fits: DR-241CL / Link: Brother DR-241CL (drum unit, Y, M, C, BK) Greetings

no idea - I would return it to the shop where I bought it (or where I bought the new one).

The drum unit is mandatory for your Brother printer. Both TN-421 and TN-423 can be used with the DR-421CL drum unit. The only difference between the Brother TN421 and TN423 toner cartridges is the yield, i.e. the number of pages they can print.

the drum must be replaced from time to time - it's very easy - the individual colour toners must of course be replaced individually, depending on consumption

Good morning Brother DR-241CL Drum Unit fits Brother DCP-9020CDW

Good morning This is the correct drum unit for the Brother HL-9310CDW.

According to the manufacturer, TN423 cartridges are compatible.

The product here would be the drum, not the toner.

Hello Namira No. The DR-241CL drum set is required for the MFC-9340CDW. Greetings

Hello Oprina For the MFC-L8900CDW the toner TN-421BK, TN-423BK or the large TN-426BK will fit. BK=Black Greetings

Brother does not have a DCP-L8410CDN (N = Network / W-Wireless). To be on the safe side, check the machine again above the display. You can also open the front flap and check which drum unit (type) is installed. The DR-421CL drum unit is suitable for the Brother DCP-L8410CDW.