How to change a toner in Brother Fax 2840 - YouTube
Combo DR420 + TN450 Toner & Drum for Brother HL-2270 DCP-7070DW FAX-2840 2940 | eBay
Amazon.com: S SMARTOMNI Compatible Toner Cartridge and Drum Unit Replacement for Brother TN450 TN420 DR420 to use with HL-2270DW HL-2280DW HL-2230 HL-2240 MFC-7360N MFC-7860DW DCP7065DN Fax 2840 (2 Toner 1 Drum) :