How To Change Toner In A Brother Laser Printer (HL L2340DW) - YouTube
1 Pack Black Compatible Brother TN660 / TN630High Yield Replacement Toner Cartridge for use in the Brother DCP-L2520DW, HL-L2300D, HL-L2320D, HL- L2340DW, HL-L2360DW, MFC-L2700DW, MDC-L2720DW – Laser Tek Services
Amazon.com: Brother HL-L2340DW Black Toner (1200 Yield) - Genuine Original OEM Toner